PHILIPS TEA5777HN

34.807IRELESS
IMPORTANT NOTICE
Dear customer,
As from August 2nd 2008, the wireless operations of NXP have moved to a new company,
ST-NXP Wireless.
As a result, the following changes are applicable to the attached document.
●
Company name - Philips Semiconductors is replaced with ST-NXP Wireless.
●
Copyright - the copyright notice at the bottom of each page “© Koninklijke Philips
Electronics N.V. 200x. All rights reserved”, shall now read: “© ST-NXP Wireless 200x All rights reserved”.
●
Web site - http://www.semiconductors.philips.com is replaced with
http://www.stnwireless.com
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to [email protected], is now found at
http://www.stnwireless.com under Contacts.
If you have any questions related to the document, please contact our nearest sales office.
Thank you for your cooperation and understanding.
ST-NXP Wireless
34.807IRELESS
www.stnwireless.com
TEA5777
Low-power AM/FM stereo radio for handheld applications
Rev. 01 — 11 April 2006
Product data sheet
1. General description
The TEA5777 is a BiCMOS single-chip (32-pin or 48-pin package), electronically tuned
AM/FM stereo radio circuit, with fully integrated IF selectivity and demodulation including
local synthesized oscillator, and is intended to be used in electronically tuned radio sets.
In FM mode the radio is completely alignment free and in AM mode only a minimum of
antenna input alignment is required. The radio requires a minimum number of small and
low cost external components.
The IC communicates with a microcontroller via the I2C-bus or the 3-wire bus.
2. Features
2.1 General
n High integration level of the AM and FM receiver means a very limited number of
external components are required
n On-board PLL synthesizer tuning function which includes VCOs, dividers, phase
detectors and charge pump
n FM mixer conversion for US and Europe, OIRT and Japanese band to IF
n Crystal reference frequency oscillator operating at 4 MHz
n External reference input frequency of 13 MHz (bus selectable)
n Autonomous search function
n IF counter with 1-bit output via the bus
n Silent readout of mono or stereo information and IF in-window indication
n Level detector with 4-bit level information output via the bus
n I2C-bus or 3-wire bus
n Standby mode switched via the bus
n 2 software programmable I/O ports with multiple functions
n Supply voltage range: 2.7 V to 7 V (typical 3 V)
n Low current consumption: 9.8 mA in AM mode and 13.9 mA in FM mode
2.2 AM
n
n
n
n
n
n
Fully integrated AM RF tuning function (no external varicap required)
High-impedance MOSFET input
Fully integrated AM IF filters
Fully integrated AM VCO
Integrated image rejection mixer structure
LW and MW reception possibility
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
2.3 FM
n
n
n
n
n
n
n
n
n
n
n
n
High input sensitivity
Fully integrated FM IF selectivity
Fully integrated FM demodulator (no external discriminator)
Integrated image rejection mixer structure
RF LC oscillator operating with low cost fixed inductors (referenced to ground)
FM I/Q mixer for conversion of the US, Europe, Japanese and OIRT band to IF
Fully integrated, adjustment free, stereo decoder
Signal dependent mono or stereo blend (with on and off function)
FM stereo readout via the bus and silent readout mode
RDS MPX output available
Stereo decoder can be switched off via the bus
Integrated anti-birdy filter
3. Applications
n
n
n
n
Portable AM/FM stereo radio
Mini and midi receiver sets
PC radio applications
GSM handsets
4. Quick reference data
Table 1.
Quick reference data
VCCA = VCCD = 3 V; Tamb = 25 °C; all AC values are given in RMS.
See Figure 9 for details on the dummy inputs Vi1, Vi2 and Vi3.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
2.7
3.0
7.0
V
General
VCCA
analog supply voltage
VCCD
digital supply voltage
ICCA
analog supply current
ICCD
Tamb
digital supply current
2.7
3.0
5.0
V
FM mode
10
13.9
17
mA
AM mode
8
9.8
11
mA
Standby mode
via bus control
-
0.03
0.15
mA
FM mode
0.5
0.8
1.5
mA
AM mode
0.5
0.8
1.5
mA
Standby mode
via bus control
-
0.13
0.25
mA
−10
-
+65
°C
0.2
-
VCCA − V
0.3
ambient temperature
Tuning
VO
output voltage
tuning voltage range
on pin CPOUT
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
2 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 1.
Quick reference data …continued
VCCA = VCCD = 3 V; Tamb = 25 °C; all AC values are given in RMS.
See Figure 9 for details on the dummy inputs Vi1, Vi2 and Vi3.
Symbol Parameter
fRF
Conditions
RF frequency
Min
Typ
Max
Unit
fstep = 10 kHz;
fIF = 150 kHz
10.24
-
81.91
MHz
fstep = 33.333 kHz;
fIF = 133.333 kHz
34.13
-
273.03 MHz
fstep = 50 kHz;
fIF = 150 kHz
51.2
-
409.55 MHz
FM
AM; fstep = 1 kHz;
fIF = 21 kHz
FM
[1]
[1]
LW
128
-
511.75 kHz
MW
512
-
2047
kHz
-
2.7
3.5
µV
performance[2]
Vi
input voltage
Vi = Vi2 =
RF sensitivity at
dummy input
[3]
Vo(AF)
AF output voltage
measured on pins
VAFL and VAFR
[4]
fIF = 133.333 kHz
70
95
120
mV
fIF = 150 kHz
55
75
95
mV
-
60
-
dB
[6]
-
0.55
1.5
%
S/N
signal-to-noise ratio
measured on pin
MPXOUT
THD
total harmonic distortion measured on pin
MPXOUT
AM performance[7]
Vi
input voltage
Vi = Vi1 =
RF sensitivity at
dummy input
[8]
-
155
-
µV
E
electric field strength
RF sensitivity with
ferroceptor
[9]
-
2.9
-
mV/m
Vo(AF)
AF output voltage
measured on pins
VAFL and VAFR
[10]
72
90
108
mV
S/N
signal-to-noise ratio
[11]
40
48
-
dB
total harmonic distortion
[12]
-
1
2.5
%
[13]
26
40
-
dB
THD
MPX stereo decoder performance
αcs
[1]
channel separation
Programmable frequency range of the synthesizer referred to the antenna input.
[2]
fRF = 100 MHz; ∆fFM(max) = 22.5 kHz; fmod = 1 kHz; τdeemp = 50 µs.
[3]
The sensitivity at the dummy input is equivalent to EMF in a 75 Ω system.
Conditions: (S+N)/N = 26 dB; L = R; Baud(−3dB) = 300 Hz to 15 kHz, A-weighted; fIF = 133.333 kHz.
[4]
Vi2 = 1 mV; ∆fFM(max) = 22.5 kHz.
[5]
Vi2 = 1 mV; L = R; Baud(−3dB) = 300 Hz to 15 kHz, A-weighted; fIF = 133.333 kHz.
[6]
Vi2 = 1 mV; ∆f = 75 kHz; with external τdeemp = 50 µs; Baud(−3dB) limited to 15 kHz.
[7]
fRF = 918 kHz; m = 0.3; fmod = 1 kHz; τdeemp = 75 µs
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
3 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
[8]
Conditions: (S+N)/N = 26 dB; m = 0.3; A-weighting filter.
[9]
With ferroceptor C8E-A0424 TOKO Inc; (S+N)/N = 26 dB; A-weighting filter.
[10] Vi1 = 5 mV.
[11] Vi1 = 5 mV; A-weighting filter.
[12] Vi1 = 5 mV; m = 0.8; bit AGCRF = 0 (slow AGC RF); bit AGCIF = 0 (slow AGC IF); Baud(−3dB) limited to
15 kHz.
[13] Vi3 = 300 mV; fmod = 1 kHz; Vpilot = 30 mV; R = 1 and L = 0 or R = 0 and L = 1; VTMUTE = 1 V;
fIF = 133.333 kHz; Baud(−3dB) limited to 15 kHz.
5. Ordering information
Table 2.
Ordering information
Type number
Package
Name
Description
Version
TEA5777HN
HVQFN48
plastic thermal enhanced very thin quad flat
package; no leads; 48 terminals;
body 7 × 7 × 0.85 mm
SOT619-1
TEA5777HL
LQFP32
plastic low profile quad flat package; 32 leads;
body 7 × 7 × 1.4 mm
SOT358-1
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
4 of 47
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TEA5777HN
(TEA5777HL)
AGC
IF COUNTER
MPXIN
36 (24)
33 (22)
bus
FM antenna
RFIN1
GNDRF
43 (28)
44 (29)
45 (30)
80 kHz
LIMITER
LNA
I/Q MIXER
VCO
÷2
N1
STEREO DECODER
REFERENCE
DEMODULATOR
IF FILTER
LPF
Philips Semiconductors
MPXOUT
6. Block diagram
TEA5777_1
Product data sheet
TMUTE
22 (15)
bus
RFIN2
4 (3)
VCOTANK2
3 (2)
SLOW LEVEL
VCOTANK1
MATRIX
SDS
ADC (4-bit)
MUX
bus
bus
5 (4)
GNDVCO_AMRF
bus
34
(23)
31
(21)
VAFR
VAFL
bus
AM/FM
selection
bus
MASTER FILTER
9
(6)
SWPORT1
10
(7)
SWPORT2/EXTIN
bus
PROGRAMMABLE
DIVIDER
AM VCO
PHASE
DETECTOR
REFERENCE
DIVIDER
7 (5)
I/Q MIXER
IF FILTER
I2C-BUS AND
3-WIRE BUS
38
(25)
30
(20)
26
(17)
23
(16)
11
(8)
41
(27)
29
(19)
15
(10)
20
(14)
VCCD
GNDIF
GNDA
GNDD
WRITE_READ
19
(13)
18
(12)
supply voltage
Fig 1. Block diagram
BUSMODE
001aab435
bus
control
Pin numbers in parenthesis apply to TEA5777HL.
4 MHz
TEA5777
5 of 47
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
40
(26)
VCCA
2 (1)
CPOUT
47
(32)
VREF
27 (18)
XTAL2
bus
14
(9)
V25DIG
POWER SUPPLY
AGC2CAP
XTAL1
bus
÷ 8 or ÷ 32
N1
bus
16
(11)
CRYSTAL
OSCILLATOR
V25IF
bus
CHARGE
PUMP
bus
bus
C-BANK
IF AGC
AM
DETECTOR
VAMLNA
AM antenna
bus
bus
bus
AMRFIN
CLOCK
RF AGC
DATA
PILDET/
AMRFAGC 46
(31)
Low-power AM/FM stereo radio for handheld applications
Rev. 01 — 11 April 2006
PILOT
DETECTOR
MUTE
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
7. Pinning information
37 n.c.
38 BUSMODE
39 n.c.
40 V25IF
41 GNDIF
42 n.c.
43 RFIN1
44 GNDRF
45 RFIN2
46 PILDET/AMRFAGC
terminal 1
index area
47 VAMLNA
48 n.c.
7.1 Pinning
n.c.
1
36 MPXOUT
CPOUT
2
35 n.c.
VCOTANK1
3
34 VAFR
VCOTANK2
4
33 MPXIN
GNDVCO_AMRF
5
32 n.c.
n.c.
6
AMRFIN
7
n.c.
8
29 GNDA
SWPORT1
9
28 n.c.
31 VAFL
TEA5777HN
30 V25DIG
SWPORT2/EXTIN 10
27 AGC2CAP
VCCD 11
26 VREF
n.c. 24
VCCA 23
TMUTE 22
n.c. 21
WRITE_READ 20
DATA 19
CLOCK 18
n.c. 17
XTAL1 16
GNDD 15
n.c. 13
25 n.c.
XTAL2 14
n.c. 12
001aab434
Transparent top view
Fig 2. Pin configuration HVQFN48
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
6 of 47
TEA5777
Philips Semiconductors
25 BUSMODE
26 V25IF
27 GNDIF
28 RFIN1
29 GNDRF
30 RFIN2
31 PILDET/AMRFAGC
32 VAMLNA
Low-power AM/FM stereo radio for handheld applications
CPOUT
1
24 MPXOUT
VCOTANK1
2
23 VAFR
VCOTANK2
3
22 MPXIN
GNDVCO_AMRF
4
AMRFIN
5
SWPORT1
6
19 GNDA
SWPORT2/EXTIN
7
18 AGC2CAP
VCCD
8
17 VREF
21 VAFL
VCCA 16
20 V25DIG
TMUTE 15
WRITE_READ 14
DATA 13
CLOCK 12
XTAL1 11
9
XTAL2
GNDD 10
TEA5777HL
001aab432
Fig 3. Pin configuration LQFP32
7.2 Pin description
Table 3.
Pin description
Symbol
Pin
Description
n.c.
1
-
not connected
CPOUT
2
1
tuning current output
VCOTANK1
3
2
parallel tuned FM oscillator to ground output 1
VCOTANK2
4
3
parallel tuned FM oscillator to ground output 2
GNDVCO_AMRF
5
4
FM VCO and AM RF input ground
n.c.
6
-
not connected
AMRFIN
7
5
AM RF input (FET input)
n.c.
8
-
not connected
SWPORT1
9
6
programmable output and input port 1
SWPORT2/EXTIN
10
7
programmable output and input port 2 or external
reference frequency input
VCCD
11
8
digital supply voltage
n.c.
12
-
not connected
n.c.
13
-
not connected
XTAL2
14
9
crystal input 2
HVQFN48 LQFP32
GNDD
15
10
digital ground
XTAL1
16
11
crystal input 1
n.c.
17
-
not connected
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
7 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 3.
Pin description …continued
Symbol
Pin
Description
HVQFN48 LQFP32
CLOCK
18
12
I2C-bus and 3-wire bus clock input
DATA
19
13
I2C-bus and 3-wire bus data input and output
WRITE_READ
20
14
3-wire bus write and read input
n.c.
21
-
not connected
TMUTE
22
15
field strength indicator capacitor connection
VCCA
23
16
analog supply voltage
n.c.
24
-
not connected
n.c.
25
-
not connected
VREF
26
17
1.25 V stabilized reference voltage output
AGC2CAP
27
18
AM IF AGC capacitor connection
n.c.
28
-
not connected
GNDA
29
19
analog ground
V25DIG
30
20
internal stabilized supply voltage (digital part)
output
VAFL
31
21
left channel output
n.c.
32
-
not connected
MPXIN
33
22
stereo decoder input
VAFR
34
23
right channel output
n.c.
35
-
not connected
MPXOUT
36
24
FM MPX output
n.c.
37
-
not connected
BUSMODE
38
25
bus mode selection input
n.c.
39
-
not connected
V25IF
40
26
internal stabilized supply voltage (IF, demodulator
and integrated birdy filter) output
GNDIF
41
27
ground of IF, demodulator and integrated birdy
filter
n.c.
42
-
not connected
RFIN1
43
28
FM RF antenna input 1
GNDRF
44
29
FM RF ground
RFIN2
45
30
FM RF antenna input 2
PILDET/AMRFAGC
46
31
stereo decoder pilot detector filter input or AM RF
AGC capacitor connection
VAMLNA
47
32
internal stabilized supply voltage (AM front end)
output
n.c.
48
-
not connected
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
8 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
8. Functional description
The TEA5777 is an integrated AM/FM stereo radio circuit with very high integration level
including digital tuning and control functions.
The IC communicates with a microcontroller via the I2C-bus or the 3-wire bus interface
and provides the following functions:
• AM single conversion receiver with integrated image rejection for fIF = 21 kHz
• FM single conversion receiver with integrated image rejection for fIF = 133.333 kHz or
150 kHz (software selectable)
• FM stereo decoder with signal dependent stereo effect
The AM circuit incorporates:
•
•
•
•
•
•
Integrated antenna tuning function
Integrated I/Q IF channel
On-chip image reject mixer structure
A fully integrated AM VCO with fVCO = 8 × (fRF + fIF)
Software selectable high-side or low-side oscillator injection
A fully integrated AM detector
The FM circuit incorporates:
•
•
•
•
•
•
Integrated I/Q IF channel
On-chip image reject mixer structure
External RF VCO running at fVCO = 2 × (fRF ± fIF)
Software selectable high-side or low-side oscillator injection
A fully integrated demodulator
Japan band possibility
The stereo decoder incorporates:
• A 1.52 MHz VCO, that needs no external adjustment, which can lock to the 19 kHz
stereo pilot tone by means of a PLL system; the sub-carrier frequencies of 19 kHz,
38 kHz and others are regenerated from the VCO output
• Integrated 50 µs or 75 µs (switchable) de-emphasis
• Signal Dependent Stereo (SDS) function can be switched off via the bus interface
• Stereo decoder can be switched off in order to save power
Tuning function:
• The tuning synthesizer is on-chip with the radio and utilizes a PLL system for tuning
and an IF counter has been added for search-stop detection
• Tuning to a wanted input signal can be achieved by preset tuning or search tuning. For
the latter the IC has a built-in auto search function which reduces the load of the
microcontroller
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
9 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Bus communication:
• Bus communication takes place via the I2C-bus or the 3-wire bus protocol. Selection
of the bus mode is done by hardware programming via pin BUSMODE
• 4-bit ADC level information, 1-bit IF counter and mono or stereo indication (in FM
mode) can be read via the bus. Alternatively, the mono or stereo and the IF in-window
indication can be obtained via silent readout via the bus lines CLOCK and DATA
8.1 AM radio part
8.1.1 AM RF amplifier
The AM input pin AMRFIN has a (selectable) high-impedance input. The input is intended
to be connected to the top of a tuned circuit. The input impedance is determined by the
LNA gain (bit LNA) and the value of the LNA feedback resistor (bit RFB).
For large RF input signals, the RF AGC reduces the input signal level to the AM front end
in order to prevent overloading. The required AM RF AGC time constant is created by
means of an internal current source and the capacitor connected to pin
PILDET/AMRFAGC. During search operation the response time of this RF AGC circuit
can be speeded up via the bus control by bit AGCRF.
8.1.2 Tuning AM antenna circuit
The tuning capacitor for the AM antenna circuit has been integrated by means of a
capacitor bank (C-bank) and the tuning frequency can be programmed in discrete steps
via the bus. No external varactor diode is required. In order to match the capacitor bank to
the external AM antenna coil, a provision has been made to electronically align the IC to
the AM antenna. For this bit CALLIGN has to be set to logic 1 and the corresponding bits
C[6:0] have to be programmed. After this alignment bit CALLIGN should be set to logic 0
again to freeze the alignment capacitor value and to enable the control over the main
capacitor bank again.
For more details on the alignment, see Section 13.1 and the application note.
For LW mode an external capacitor needs to be added in parallel to the LW coil.
8.1.3 AM I/Q mixer
AM quadrature mixers, in an orthogonal architecture, convert AM RF signals to the
internal fIF = 21 kHz. The mixer architecture provides inherent image rejection.
8.1.4 AM VCO
The fully integrated VCO provides the local oscillator signals for the AM quadrature
mixers. No external components are required.
The internal VCO frequency ranges from 4 MHz to 14 MHz and the proper divider ratio is
chosen by selecting the MW or LW band via the bus control bit MWLW.
Programming of the VCO is done:
• For MW: fVCO = 8 × (fRF ± fIF)
• For LW: fVCO = 32 × (fRF ± fIF)
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
10 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
High-side injection or low-side injection of the VCO can be chosen:
• High-side injection: local oscillator frequency at mixer input is higher than RF input
signal frequency.
• Low-side injection: local oscillator frequency at mixer input is lower than RF input
signal frequency.
8.1.5 AM IF filter
The AM circuit incorporates an I and Q orthogonal channel path with fully integrated
polyphase IF filter. All AM IF filtering is done inside the IC, therefore no external filter
components are required. The center frequency of the filter is 21 kHz and the −3 dB
bandwidth amounts to 8 kHz.
8.1.6 AM IF amplification and AM detection
The IF AGC controls the IF amplification and a fully integrated AM detector converts the
AM IF signal into audio. In AM mode the capacitor connected to pin AGC2CAP is used for
IF AGC filtering. The value of this capacitor is a compromise between AGC speed and
THD. In order to achieve an acceptable THD in normal mode and an acceptable AGC
response during e.g. a search action, the time constant can be switched to a value
15 times lower by means of bit AGCIF. In autonomous search mode (bit SEARCH = 1) the
time constant is switched automatically to the lowest value.
8.2 FM radio part
8.2.1 Low noise RF amplifier
The FM circuit incorporates a wideband input. The LNA input impedance together with the
LC RF input circuit defines a low Q, FM band-pass filter. The input filter is also used for
impedance matching between the source impedance and the 300 Ω LNA input
impedance between pins RFIN1 and RFIN2. An RF AGC circuit prevents the mixer and IF
filter from overdrive conditions.
8.2.2 FM I/Q mixer
FM quadrature mixers, in an orthogonal I/Q architecture, convert FM RF signals to the
internal fIF = 133.333 kHz or 150 kHz. The mixer architecture provides inherent image
rejection. Whether fIF = 133.333 kHz or 150 kHz is chosen depends on bits FREF[1:0].
For choosing the best signal conditions with respect to the influence of the image signals,
high-side or low-side injection can be selected:
• High-side injection: local oscillator frequency at mixer input is higher than RF input
signal frequency.
• Low-side injection: local oscillator frequency at mixer input is lower than RF input
signal frequency.
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
11 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
8.2.3 FM VCO
The symmetrical LC, varactor tuned VCO provides the oscillator signals for the FM
quadrature mixers (pins VCOTANK1 and VCOTANK2). The VCO operates at double the
RF frequency fVCO = 2 × (fRF ± fIF) and has an internal AGC control circuit in order to
guarantee good start-up behavior and carrier-to-noise ratio (C/N) even with low Q coils
(Q > 40). High-side injection (+fIF) or low-side injection (−fIF) of the VCO can be chosen
via the bus control.
8.2.4 FM IF filter
The FM signal path incorporates an I and Q orthogonal FM channel with fully integrated
polyphase IF filter. All FM IF filtering is done inside the IC, therefore no external filter
components are required. The center frequency of the filter matches the chosen IF
(fIF = 133.333 kHz or 150 kHz) and has a −3 dB bandwidth of approximately 110 kHz.
8.2.5 FM demodulator
The FM demodulator is fully integrated and needs no external components. In order to
remove undesired IF and or RF input related components, a 80 kHz low-pass filter has
been integrated.
8.3 Stereo decoder
8.3.1 MPX decoder
The PLL stereo decoder is alignment free and incorporates a fully integrated PLL loop
filter. The stereo decoder can be switched to forced mono via bus control bit FOMO.
8.3.2 Signal strength depending mono/stereo blend
When decreasing the RF input level, the MPX decoder blends from stereo to mono to limit
the output noise. The control signal is obtained from the low-pass filtered level information
at pin TMUTE. This blend function, called SDS, can also be switched off via bus control bit
SDSOFF and a RF level related sudden change from stereo to mono transition will result.
8.3.3 Pilot detector
A pilot detector, with external filter capacitor at pin PILDET/AMRFAGC, is used to detect
the presence of a stereo signal. Mono or stereo reception can be read via the bus control,
but can also be passed to pin DATA in the Dbus mode (see Section 9). For this option, bit
DBUS has to be programmed. In this case, no bus action is required (silent readout) to
read the status of the pilot detector and the information is continuously available.
8.3.4 De-emphasis
In FM mode, the de-emphasis is switchable between 50 µs and 75 µs (bit DEEM). In AM
mode, bit DEEM selects a low-pass filter with the time constant 50 µs or 75 µs in order to
limit the noise bandwidth.
8.4 Tuning function
The tuning concept of the TEA5777 is based on a PLL and programming of the required
frequency takes place via the bus control.
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8.4.1 Reference frequency generation
The internally required reference frequency can be obtained from the integrated crystal
oscillator or from an externally applied reference signal of 13 MHz. Selection of the
reference signal (internal or external) takes place via the bus control.
The reference frequency signals are used for:
•
•
•
•
•
•
Reference frequency divider for the PLL synthesizer
Center frequency adjustment of the IF filters
Free running frequency adjustment of the stereo decoder VCO
Clocking the stereo decoder state machine
Timing of the IF counter
Sampling the RF level for the level ADC
8.4.2 Crystal oscillator
The symmetrical crystal oscillator can operate with a 4 MHz clock crystal. An amplitude
control function is implemented in order to minimize the higher harmonic component
signal levels.
8.4.3 IF counter
An IF counter has been added for search-stop detection (optional, i.e. can be enabled or
disabled via bit IFCE). The IF counter result is a 1-bit output and in-window yes or no and
available via bus control. In order to minimize the interference, the IF counter can be
disabled via the bus control bit IFCE. In both AM and FM modes, two IF window settings
can be chosen by bit IFW.
When Dbus mode is activated and bit IFCE = 1, the IF counter result is available at pin
DATA (see Table 8). In this mode, the IF counter ready flag (bit IFCRDY) is put on pin
DATA. Disabling bit IFCE, while Dbus mode is active, puts the mono or stereo indication
information on pin DATA. In this case no bus actions are required to read the status of the
IF counter (silent readout).
Remark: For updating the IF counter information a short pulse on pin WRITE_READ
should be generated.
8.4.4 Automatic search operation
The IC can be programmed to an autonomous search mode operation. In this mode, the
IC will search for a new station without the need of communication to the microcontroller.
To enable this mode, bit SEARCH has to be set. Under control of bit UPDWN, search stop
level bits SLEV[1:0] and search step control bits STEP[1:0], various search modes can be
selected (see Section 9).
Before this mode can be activated, first the upper and lower band limits have to be
programmed. Bit PROGBLIM = 1 and bit UPDWN = 1 programs the upper band limit,
while bit PROGBLIM = 1 and bit UPDWN = 0 programs the lower band limit. Bit SFOUND
signals whether a new station is found. Bit BLIM signals whether a band limit is reached.
In AM mode, bit AMDELAY selects either a 40 ms or 80 ms delay time. The best value to
be selected depends on the realized AM IF AGC response (see Section 8.1.6).
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8.5 RF level information (RSSI)
For processing Receiver Signal Strength Information (RSSI) in both AM and FM modes,
the internal level voltage is analog-to-digital converted with a 4-bit ADC. The level
information can be read by bits LEV[3:0] in the read register. In autonomous search mode,
bits LEV[3:0] still indicate some momentary level information, however the data is
dependent upon the readout timing and can be considered to have no relevance to the
user. The ADC full-scale goes from 0.25 V to 0.95 V. In AM mode, the level information
covers the ADC full-scale. In FM mode, the level information does not fully cover the ADC
full-scale.
8.6 Software programmable ports
Two software programmable ports can be addressed via the bus control. These ports can
be independently switched to multiple functions, knowing:
• Outputs: SWPORT1 and SWPORT2 can act as output ports which are capable of
sourcing and sinking approximately 9 mA.
• Inputs: SWPORT1 and SWPORT2 can act as input ports of which the status can be
read out via bus control.
Remark: Port SWPORT2 can be switched as input for the 13 MHz reference signal. In
that case, no other functions can be programmed for this port.
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9. Control functions via I2C-bus and 3-wire bus
9.1 Bus interface
Via the bus interface a couple of main blocks are controlled:
•
•
•
•
•
•
•
•
Tuning system
Autonomous search
AM capacitor bank (C-bank control)
IF counter
4-bit level ADC
Stereo decoder
Mute and de-emphasis
SWPORT1 and SWPORT2 outputs (I/O port control)
BUS INTERFACE
3-WIRE BUS OR
I2C-BUS
INTERFACE
C-BANK
CONTROL
MUTE
DE-EMPHASIS
I/O PORT
CONTROL
STEREO
DECODER
TUNING
SYSTEM
AUTONOMOUS
SEARCH
IF COUNTER
LEVEL ADC
001aab436
Fig 4. Bus interface
9.2 Bus protocol
The TEA5777 bus interface is a combination of an I2C-bus and a 3-wire-bus. The bus
mode is determined by the bus mode input pin BUSMODE which will be connected to
ground or to VCCD:
• Pin BUSMODE = HIGH enables the 3-wire mode
• Pin BUSMODE = LOW enables I2C-bus mode
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9.3 I2C-bus mode
The I2C-bus interface is based on ‘The I2C-bus specification’ version 2.1 January 2000.
In the I2C-bus mode, only pins CLOCK and DATA are used for data transfer. The level on
pin WRITE_READ is don’t care.
Data transfer to the bus interface is byte oriented and no sub-addressing is used.
The data transfer consists of a START condition, device address byte plus R/W
Data is written at the rising edge and data is clocked out at the falling edge. The I2C-bus
can operate at a maximum clock frequency of 400 kHz.
The I2C-bus device address of the TEA5777 is: 110 0000 (7 bits).
Table 4.
I2C-bus data transfer
Condition
Byte
Description
Address byte
device address + R/W bit
START
start by master
ACK
acknowledge by slave
Byte 1
ACK
data byte 1
acknowledge by slave
Byte 2
ACK
data byte 2
acknowledge by slave
Byte n
data byte n
ACK
acknowledge by slave
STOP
stop by master
9.3.1 Write mode
The bus interface has a total of 6 write registers. Before data can be written to these
registers, the I2C-bus device address byte has to be written to the IC
After the bus interface (slave) recognizes a start of transmission, the address byte is
written to the bus. If the address is equal to the internal address of the bus interface, an
acknowledge is given to the master and data can be written to the write registers.
If the bus address does not match, no acknowledge is given and the internal bus interface
clock is disabled until a next start is detected.
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Table 5.
I2C-bus write mode
Condition
Byte
Description
START
start by master
Address byte
ACK
1100 0000 (bit R/W = 0)
acknowledge by slave
Byte 1
data byte 1
ACK
acknowledge by slave
Byte 2
data byte 2
ACK
acknowledge by slave
:
:
Byte 6
data byte 6
ACK
acknowledge by slave
STOP
stop by master
9.3.2 Read mode
The bus interface has a total of 3 read bytes. If a start of transmission is detected and the
I2C-bus device address matches with the internal address, an acknowledge is given and
the data is clocked out. If not, the internal clock is disabled and the data output will be
logic 1s (FFh).
Table 6.
Condition
I2C-bus read mode
Byte
Description
START
start by master
Address byte
ACK
acknowledge by slave
Byte 1
ACK
data byte 1
acknowledge by slave
Byte 2
ACK
data byte 2
acknowledge by slave
Byte 3
STOP
1100 0001 (bit R/W = 1)
data byte 3
stop by master
9.3.3 Dbus function in I2C-bus mode (silent readout)
The Dbus function becomes active when bit DBUS = 1 and when the maximum available
bytes are written in the write mode or when the maximum available bytes are read in the
read mode. At every start of an I2C-bus data transfer, the Dbus mode is deactivated.
When the Dbus mode is active in I2C-bus mode, pin WRITE_READ becomes an
open-collector output (pull-up resistor required). Depending on the setting of bit IFCE and
bit SEARCH, the following data will be available at pin WRITE_READ:
• Mono or stereo indication flag
• IFC counter flag
• SFOUND flag or BLIM reached flag
In Table 7 the data at pin WRITE_READ is depicted as a function of bits DBUS, SEARCH
and IFCE.
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Table 7.
Definition pin WRITE_READ functionality in I2C-bus Dbus mode
Bit
Pin WRITE_READ
DBUS
SEARCH IFCE
Output signal
Status[1]
0
X
X
3-state
not applicable
1
0
0
mono or stereo flag
H = stereo, L = mono
0
1
IFCRDY flag
H = IF counter ready
1
X
SFOUND or BLIM flag
H = station found or band limit reached
[1]
H = HIGH-level output voltage
L = LOW-level output voltage
9.4 3-wire bus mode
For the 3-wire bus mode pin BUSMODE = HIGH, i.e. connected to VCCA. The pins
CLOCK, DATA and WRITE_READ are used to communicate with the external hardware
(microcontroller or PC). The bus operates at a maximum clock of 1 MHz.
The selected mode (read or write mode) is determined by the rising or falling edge of
signal WRITE_READ.
9.4.1 Write mode
At the rising edge of signal WRITE_READ the bus interface is set to the write mode. At
every rising edge of the clock input (CLOCK) the data is clocked in. Signal DATA has to be
stable before it can be clocked in.
50 %
WRITE_READ
tw(W)
tsu(clk)
CLOCK
50 %
50 %
th(D)
tsu(D)
50 %
DATA
valid data
001aae434
Fig 5. 3-wire bus write data
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9.4.2 Read mode
At the falling edge of signal WRITE_READ the bus interface is set to the read mode. Data
is clocked out on every falling edge of the input clock. In the read mode, pin DATA
becomes an open-collector output and an external pull-up resistor is required.
50 %
WRITE_READ
tw(R)
tsu(clk)
tclk(H)
CLOCK
50 %
50 %
tclk(L)
th(Q)
td(Q)
50 %
DATA
50 %
001aae435
Fig 6. 3-wire bus read data
9.4.3 Dbus function in 3-wire mode (silent readout)
Bus pins CLOCK and DATA are bidirectional and act as inputs when bit DBUS = 0, but are
open-collector outputs when bit DBUS = 1. External pull-up resistors are required in this
case.
In Dbus mode, pins CLOCK and DATA are used for output data and pin WRITE_READ is
used as an input.
With a rising edge (write mode) or falling edge (read mode) of signal WRITE_READ the
Dbus mode is deactivated and a transmission is started.
The Dbus mode is activated with bit DBUS = 1 and after transfer of all 6 data bytes in the
write mode or all 3 data bytes in the read mode.
Data on pins CLOCK and DATA in the Dbus mode is given in Table 8.
Table 8.
CLOCK and DATA lines in Dbus-mode
Bit
Pin CLOCK
DBUS
SEARCH IFCE
Signal
0
X
X
input
-
1
0
0
IFC flag
H = IF in-window mono/stereo flag H = stereo, L = mono
1
IFC flag
H = IF in-window IFCRDY flag
X
SFOUND H = station found BLIM flag
flag
1
[1]
1
Signal
Status[1]
input
H = IF counter ready
H = band limit
reached
H = HIGH-level output voltage
L = LOW-level output voltage
TEA5777_1
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Pin DATA
Status[1]
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9.5 Data transfer in I2C-bus and 3-wire mode
In the write mode, the data transfer between the TEA5777 (slave) and the microcontroller
(master) is byte oriented.
In the read mode, the data transfer from slave to master is bit oriented.
Remark: For writing to the PLL, it is necessary to write both the first and second data
byte. Only after completing the data transfer of data byte 2 is the PLL word copied into the
PLL register.
9.5.1 Register definition in write mode
Table 9.
Survey of bit names in FM write mode
Bits marked with * are common for FM and AM mode.
Bits
7
6
5
4
3
2
1
0
Byte 1
MUTE*
AM/FM*
STB*
PLL12
PLL11
PLL10
PLL9
PLL8
Byte 2
PLL7
PLL6
PLL5
PLL4
PLL3
PLL2
PLL1
PLL0
Byte 3
FREF1
FREF0
IFCE*
IFW*
HILO*
DBUS*
-
INTEXT*
Byte 4
P1*
P0*
PEN1*
PEN0*
-
CHP0*
DEEM*
-
Byte 5
FOMO
SDSOFF
DOFF
-
-
-
-
-
Byte 6
SEARCH*
PROGBLIM*
UPDWN*
SLEV1*
SLEV0*
STEP1
STEP0*
-
9.5.1.1
FM write mode
Table 10. FM write mode - data byte 1
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
MUTE*
audio mute: 0 = audio not muted; 1 = audio muted
6
AM/FM*
AM/FM selection: 0 = FM; 1 = AM
5
STBY*
operating mode: 0 = operating; 1 = standby
4
PLL12
setting of synthesizer programmable counter
3
PLL11
2
PLL10
1
PLL9
0 (LSB)
PLL8
Table 11. FM write mode - data byte 2
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
PLL7
setting of synthesizer programmable counter
6
PLL6
5
PLL5
4
PLL4
3
PLL3
2
PLL2
1
PLL1
0 (LSB)
PLL0
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Table 12. FM write mode - data byte 3
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
IF and reference frequency control: see Table 13
7 (MSB)
FREF1
6
FREF0
5
IFCE*
IF counter: 0 = not enabled; 1 = enabled
4
IFW*
IF window: 0 = 10 kHz; 1 = 20 kHz
3
HILO*
VCO injection mode: 0 = low-side; 1 = high-side
2
DBUS*
Dbus mode selection: 0 = off; 1 = on
1
-
no function
0 (LSB)
INTEXT*
reference frequency source select: 0 = external; 1 = internal
Table 13.
FM IF and reference frequency control
Bits FREF[1:0 fref(VCO)
fref(RF)
FM mode
VCO step
frequency (kHz)
reference frequency
referred to RF input (kHz)
00
100
50
fIF = 150 kHz
01
20
10
fIF = 150 kHz for East Europe
10
66.666
33.333
fIF = 133.333 kHz
11
100
50
fIF = 150 kHz
Table 14. FM write mode - data byte 4
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
P1*
I/O port control: see Table 28 and Table 29
6
P0*
5
PEN1*
4
PEN0*
3
-
no function
2
CHP0*
charge pump current: 0 = large; 1 = small
1
DEEM*
de-emphasis: 0 = 50 µs; 1 = 75 µs
0 (LSB)
-
no function
Table 15. FM write mode - data byte 5
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
FOMO
stereo reception: 0 = allow; 1 = force mono
6
SDSOFF
stereo decoder blend function: 0 = on; 1 = off
5
DOFF
stereo decoder: 0 = on; 1 = standby
4
-
3
-
2
-
1
-
0 (LSB)
-
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Table 16. FM write mode - data byte 6
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
SEARCH*
search mode: 0 = disabled; 1 = enabled
6
PROGBLIM*
copy word: 0 = no copy; 1 = copy PLL word to BLIM register
5
UPDWN*
if bit PROGBLIM = 0: 0 = down search; 1 = up search
4
SLEV1*
search level settings: see Table 17
3
SLEV0*
2
STEP1
1
STEP0*
0 (LSB)
-
Table 17.
Search level settings
if bit PROGBLIM = 1: 0 = lower band-limit; 1 = upper band-limit
no function
Bits SLEV[1:0]
RF level (FM)
00
5 µV
0010
01
10 µV
0100
10
30 µV
0110
11
60 µV
1001
Table 18.
9.5.1.2
search steps FM: see Table 18
ADC[3:0] level bits
Search steps FM
Programmable steps
FM
Bits STEP[1:0]
Step size
100 kHz reference
66 kHz reference 20 kHz reference
00
1
50
33.333
01
2
100
66.666
20
10
3
150
100
30
11
4
200
133.333
40
10
AM write mode
Table 19. Survey of bit names in AM write mode
Bits marked with * are common for FM and AM mode.
Bits
7
6
5
4
3
2
1
0
Byte 1
MUTE*
AM/FM*
STB*
PLL10
PLL9
PLL8
PLL7
PLL6
Byte 2
PLL5
PLL4
PLL3
PLL2
PLL1
PLL0
AGCRF
AGCIF
Byte 3
MWLW
LNA
IFCE*
IFW*
HILO*
DBUS*
PEAK
INTEXT*
Byte 4
P1*
P0*
PEN1*
PEN0*
-
CHP0*
DEEM*
RFB
Byte 5
CALLIGN
C6
C5
C4
C3
C2
C1
C0
Byte 6
SEARCH*
PROGBLIM*
UPDWN*
SLEV1*
SLEV0*
AMDELAY
STEP0*
-
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Table 20. AM write mode - data byte 1
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
MUTE*
audio mute: 0 = audio not muted; 1 = audio muted
6
AM/FM*
AM/FM selection: 0 = FM; 1 = AM
5
STBY*
operating mode: 0 = operating; 1 = standby
4
PLL10
setting of synthesizer programmable counter
3
PLL9
2
PLL8
1
PLL7
0 (LSB)
PLL6
Table 21. AM write mode - data byte 2
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
PLL5
setting of synthesizer programmable counter
6
PLL4
5
PLL3
4
PLL2
3
PLL1
2
PLL0
1
AGCRF
RF AGC response: 0 = slow; 1 = fast
0 (LSB)
AGCIF
IF AGC response: 0 = slow; 1 = fast
Table 22. AM write mode - data byte 3
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
MWLW
band select: 1 = MW; 0 = LW
6
LNA
LNA gain: 0 = 5 ×; 1 = 10 ×
5
IFCE*
IF counter: 0 = not enabled; 1 = enabled
4
IFW*
IF window: 0 = 2 kHz; 1 = 4 kHz
3
HILO*
VCO injection mode: 0 = low-side; 1 = high-side
2
DBUS*
Dbus mode selection: 0 = off; 1 = on
1
PEAK
RFAGC speed-up: 0 = off; 1 = fast attack, normal decay
0 (LSB)
INTEXT*
reference frequency source select: 0 = external; 1 = internal
Table 23. AM write mode - data byte 4
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
P1*
I/O port control: see Table 28 and Table 29
6
P0*
5
PEN1*
4
PEN0*
3
-
no function
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Table 23. AM write mode - data byte 4 …continued
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
2
CHP0*
charge pump current: 0 = large; 1 = small
1
DEEM*
de-emphasis: 0 = 50 µs; 1 = 75 µs
0 (LSB)
RFB
LNA feedback resistor: 0 = 1 MΩ; 1 = 2.2 MΩ
Table 24. AM write mode - data byte 5
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
CALLIGN
selection bit: 0 = C[6:0] sets C-bank; 1 = C[6:0] sets C-align
6
C6
C[6:0] sets C-bank or C-align word depending upon bit CALLIGN:
5
C5
C-align: C[6:0] should be between 0 and 128 (decimal)
4
C4
C-bank: C[6:0] should be between 0 and 122 (decimal)
3
C3
2
C2
1
C1
0 (LSB)
C0
Table 25. AM write mode - data byte 6
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
SEARCH*
search mode: 0 = disabled; 1 = enabled
6
PROGBLIM*
copy word: 0 = no copy; 1 = copy PLL word to BLIM register
5
UPDWN*
if bit PROGBLIM = 0: 0 = down search; 1 = up search
if bit PROGBLIM = 1: 0 = lower band limit; 1 = upper band limit
search level settings: see Table 26
4
SLEV1*
3
SLEV0*
2
AMDELAY
IF counter delay; 0 = 40 ms; 1 = 80 ms
1
STEP0*
search steps AM: see Table 27
0 (LSB)
-
no function
Table 26.
Search level settings
Bits SLEV[1:0]
RF level (AM)[1]
ADC[3:0] level bits
00
0.9 mV/m
0010
01
1.2 mV/m
0100
10
1.9 mV/m
0110
11
3.8 mV/m
1001
[1]
Measured with ferroceptor C8E-A0424 TOKO Inc.
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Table 27.
Search steps AM
Programmable steps
AM fref = 8 kHz
Bit STEP0
Step size
PLL step
MW
LW
MW
LW
MW
LW
0
9
36
9 kHz
9 kHz
9 kHz mode
9 kHz mode
1
10
40
10 kHz
10 kHz
10 kHz mode 10 kHz mode
Table 28.
C-bank step
I/O port control SWPORT1
Bit PEN0
Bit P0
PORT P0 (pin SWPORT1)
0
X[1]
input
1
0
output logic 0
1
output logic 1
[1]
X = don’t care.
Table 29.
I/O port control SWPORT2
Bit INTEXT
Bit PEN1
Bit P1
PORT P1 (SWPORT2)
[1]
input (internal reference)
1
0
X
1
1
0
output logic 0 (internal reference)
1
output logic 1 (internal reference)
0
X[1]
1
reference input (13 MHz)
[1]
X = don’t care.
9.5.2 Register definition in read mode
Table 30. Survey of bit names in FM read mode
Bits marked with * are common for FM and AM mode.
Bits
7
6
5
4
3
2
1
0
Byte 1
IFCRDY*
IFCE*
MOST
LEV3*
LEV2*
LEV1*
LEV0*
SFOUND*
Byte 2
BLIM*
P1*
P0*
PLL12
PLL11
PLL10
PLL9
PLL8
Byte 3
PLL7
PLL6
PLL5
PLL4
PLL3
PLL2
PLL1
PLL0
9.5.2.1
FM read mode
Table 31. FM read mode - data byte 1
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
IFCRDY*
IF counter ready
6
IFCE*
IF counter enable
5
MOST
mono or stereo setting
4
LEV3*
search level setting
3
LEV2*
2
LEV1*
1
LEV0*
0 (LSB)
SFOUND*
station found
TEA5777_1
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Rev. 01 — 11 April 2006
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TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 32. FM read mode - data byte 2
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
BLIM*
band limit reached
6
P1*
port 1 setting
5
P0*
port 0 setting
4
PLL12
setting of synthesizer
3
PLL11
2
PLL10
1
PLL9
0 (LSB)
PLL8
Table 33. FM read mode - data byte 3
Bits marked with * are common for FM and AM mode.
9.5.2.2
Bit
Symbol
Description
7 (MSB)
PLL7
setting of synthesizer
6
PLL6
5
PLL5
4
PLL4
3
PLL3
2
PLL2
1
PLL1
0 (LSB)
PLL0
AM read mode
Table 34. Survey of bit names in AM read mode
Bits marked with * are common for FM and AM mode.
Bits
7
6
5
4
3
2
1
0
Byte 1
IFCRDY*
IFCE*
-
LEV3*
LEV2*
LEV1*
LEV0*
SFOUND*
Byte 2
BLIM*
P1*
P0*
PLL10
PLL9
PLL8
PLL7
PLL6
Byte 3
PLL5
PLL4
PLL3
PLL2
PLL1
PLL0
-
-
Table 35. AM read mode - data byte 1
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
IFCRDY*
IF counter ready
6
IFCE*
IF counter enable
5
-
no function
4
LEV3*
search level setting
3
LEV2*
2
LEV1*
1
LEV0*
0 (LSB)
SFOUND*
station found
TEA5777_1
Product data sheet
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Rev. 01 — 11 April 2006
26 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 36. AM read mode - data byte 2
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
BLIM*
band limit reached
6
P1*
port 1 setting
5
P0*
port 0 setting
4
PLL10
setting of synthesizer
3
PLL9
2
PLL8
1
PLL7
0 (LSB)
PLL6
Table 37. AM read mode - data byte 3
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB)
PLL5
setting of synthesizer
6
PLL4
5
PLL3
4
PLL2
3
PLL1
2
PLL0
1
-
no function
0 (LSB)
-
no function
TEA5777_1
Product data sheet
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Rev. 01 — 11 April 2006
27 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
10. Limiting values
Table 38. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
VCCA
Conditions
Min
Max
Unit
analog supply voltage
−0.3
+8
V
VCCD
digital supply voltage
−0.3
+5
V
Vx
voltage on pin x
−0.3
+8
V
VCOTANK1 and VCOTANK2
Tstg
storage temperature
−55
+150
°C
Tamb
ambient temperature
−10
+65
°C
Vesd
electrostatic discharge voltage
MM
[1]
-
±100
V
HBM
[2]
-
±1000
V
MM
[1]
-
±200
V
HBM
[2]
-
±1500
V
MM
[1]
-
±200
V
HBM
[2]
-
±2000
V
Typ
Unit
HVQFN48 package
29
K/W
LQFP32 package
80
K/W
on pins SWPORT1 and SWPORT2
on pin AMRFIN
on all other pins
[1]
Machine model: R = 10 Ω, L = 0.75 µH, C = 200 pF.
[2]
Human body model: R = 1.5 kΩ, C = 100 pF.
11. Thermal characteristics
Table 39.
Thermal characteristics
Symbol
Parameter
Conditions
Rth(j-a)
thermal resistance from junction to ambient in free air
TEA5777_1
Product data sheet
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Rev. 01 — 11 April 2006
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TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
12. Characteristics
Table 40. Static characteristics
VCCA = VCCD = 3 V; Tamb = 25 °C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Supplies
VCCA
analog supply voltage
2.7
3.0
7.0
V
VCCD
digital supply voltage
2.7
3.0
5.0
V
ICCA
analog supply current
FM mode
10
13.9
17
mA
AM mode
8
9.8
11
mA
ICCD
digital supply current
Standby mode via bus control
-
0.03
0.15
mA
FM mode
0.5
0.8
1.5
mA
AM mode
0.5
0.8
1.5
mA
Standby mode via bus control
-
0.13
0.25
mA
0.2
-
VCCA − 0.3 V
-
1.6
-
DC operating voltages
output voltage
VO
on pin CPOUT
unloaded
tuning voltage range
on pins XTAL1 and XTAL2
on pin TMUTE
0.2
-
0.8
V
-
1.2
V
-
1.25
-
V
FM
-
-
-
V
AM
-
1.25
-
V
-
2.5
-
V
FM
0.675
0.750
0.825
V
AM
0.55
0.65
0.75
V
on pin VREF
on pin V25DIG
on pins VAFL and VAFR
on pin MPXOUT
FM
1
1.25
1.5
V
AM
-
0
-
V
-
2.5
-
V
FM
-
0.75
-
V
AM
0
-
2.5
V
FM
-
-
-
V
AM
-
2.3
-
V
on pin V25IF
on pin PILDET/AMRFAGC
on pin VAMLNA
input voltage
VI
on pin MPXIN
on pins RFIN1 and RFIN2
[1]
V
0.1
FM
AM
on pin AGC2CAP
[1]
unloaded
FM
0.7
0.75
0.8
V
AM
-
0
-
V
FM
0
1.75
-
V
AM
-
0
-
V
These minimum and maximum values are typical values.
TEA5777_1
Product data sheet
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Rev. 01 — 11 April 2006
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TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 41. Digital input and output characteristics
VCCA = VCCD = 3 V; Tamb = 25 °C; unless otherwise specified.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
-
2.4
-
V
-
109.7
-
mV
Software programmable ports: pins SWPORT1 and SWPORT2
VOH
HIGH-level output voltage
IO = 0 A
VOL
LOW-level output voltage
IO = 1 mA
on pin SWPORT1
on pin SWPORT2
Io(source) output source current
Io(sink)
output sink current
-
105.5
-
mV
VO = 0 V
−6
−9
−14
mA
VO = 3 V
6
9
14
mA
on pin SWPORT1
-
7.85
-
mA
on pin SWPORT2
-
8.04
-
mA
VO = 0.8 V; Rpu = 1 kΩ
Digital inputs
VIH
HIGH-level input voltage
0.45VCCD
-
-
V
VIL
LOW-level input voltage
-
-
0.2VCCD
V
Digital outputs: pins CLOCK, DATA and WRITE_READ
VOL
LOW-level output voltage
IOL = 500 µA; open-collector
-
-
450
mV
IOL
LOW-level output current
open-collector
500
-
-
µA
Min
Typ
Max
Unit
Table 42. Bus timing characteristics
VCCA = VCCD = 3 V; Tamb = 25 °C; unless otherwise specified.
Symbol Parameter
Timing
Conditions
I2C-bus
fSCL
SCL clock frequency
-
-
400
kHz
tHIGH
HIGH period of the SCL clock
1
-
-
µs
tLOW
LOW period of the SCL clock
1
-
-
µs
Timing 3-wire bus; see Figure 7 and Figure 8
fi(clk)
clock input frequency
-
-
1
MHz
tclk(H)
clock HIGH time
300
-
-
ns
tclk(L)
clock LOW time
300
-
-
ns
Write mode
tw(W)
write enable pulse width
1
-
-
µs
tsu(clk)
clock setup time
300
-
-
ns
tsu(D)
data input set-up time
in write mode
100
-
-
ns
th(D)
data input hold time
in write mode
100
-
-
ns
Read mode
tw(R)
read enable pulse width
1
-
-
µs
tsu(clk)
clock setup time
300
-
-
ns
th(Q)
data output hold time
in read mode
10
-
-
ns
td(Q)
data output delay time
in read mode
-
-
100
ns
TEA5777_1
Product data sheet
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Rev. 01 — 11 April 2006
30 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
50 %
WRITE_READ
tw(W)
tsu(clk)
CLOCK
50 %
50 %
th(D)
tsu(D)
valid data
50 %
DATA
001aae434
Fig 7. 3-wire bus write data
50 %
WRITE_READ
tw(R)
tsu(clk)
CLOCK
tclk(H)
50 %
50 %
tclk(L)
th(Q)
td(Q)
50 %
DATA
50 %
001aae435
Fig 8. 3-wire bus read data
Table 43. Dynamic characteristics
VCCA = VCCD = 3 V; Tamb = 25 °C; all values are given in RMS; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
FM voltage controlled oscillator: pins VCOTANK1 and VCOTANK2
fosc
oscillator frequency
VCPOUT = 0.2 V to (VCCA − 0.3 V)
130
-
217
MHz
Vo
output voltage
measured between pins VCOTANK1 and
VCOTANK2; fosc = 200 MHz; Q = 40;
L = 33 nH
-
500
-
mV
ICCA(VCO)
VCO analog supply current
0.5
1
3
mA
Crystal oscillator: pins XTAL1 and XTAL2
fxtal
crystal frequency
internal reference source selected
-
4
-
MHz
∆fxtal
crystal frequency accuracy
fxtal = 4 MHz
-
20
50
ppm
Vo(xtal)(p-p)
peak-to-peak crystal oscillator measured between pins XTAL1 and XTAL2
output voltage
-
280
-
mV
VO(bias)
bias output voltage
-
1.6
-
V
Ri
input resistance
150
-
-
Ω
measured between pins XTAL1 and XTAL2
TEA5777_1
Product data sheet
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Rev. 01 — 11 April 2006
31 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 43. Dynamic characteristics …continued
VCCA = VCCD = 3 V; Tamb = 25 °C; all values are given in RMS; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Ci
input capacitance
measured between pins XTAL1 and XTAL2
-
16
-
pF
External reference frequency input: pin SWPORT2/EXTIN
fi
input frequency
FM
-
13
-
MHz
AM
-
13
-
MHz
150
-
1800
mV
[1]
Vi
input voltage
external applied
VI
input voltage
no external input signal applied
-
0.9
-
V
Zi
input impedance
at indicated input frequency
-
100
-
kΩ
FM band from 87.5 MHz to 108 MHz;
step = 100 kHz
-
2.3
-
s
AM band from 522 kHz to 1620 kHz;
AM delay = 40 ms
-
10
-
s
FM
-
10
-
ms
AM: MW
-
10
-
ms
-
10
-
ms
MHz
Synthesizer
tsrch
tacq
search time
acquisition time
synthesizer search time for empty band
synthesizer preset acquisition time between
two band limits
AM: LW
fRF
RF frequency
[2]
FM
fstep = 10 kHz; fIF = 150 kHz
10.24 -
81.91
fstep = 33.333 kHz; fIF = 133.333 kHz
34.13 -
273.03 MHz
51.2
-
409.55 MHz
LW
128
-
511.75 kHz
MW
512
-
2047
fstep = 50 kHz; fIF = 150 kHz
AM; fstep = 1 kHz; fIF = 21 kHz
[2]
kHz
Synthesizer programmable divider
D/Dprog
programmable divider ratio
Dprog(step)
programmable divider step
NVCO(AM)
AM VCO divider
FM
1024
8191
AM
512
2047
-
1
-
AM MW
-
8
-
AM LW
-
32
-
Synthesizer reference divider
D/Dref(xtal)
crystal reference divider ratio
internal reference frequency; fxtal = 4 MHz
FM
fref(RF) = 10 kHz; fIF = 150 kHz
-
200
-
fref(RF) = 33.333 kHz; fIF = 133.333 kHz
-
60
-
fref(RF) = 50 kHz; fIF = 150 kHz
-
40
-
-
500
-
AM
fref(RF) = 1 kHz; fIF = 21 kHz
TEA5777_1
Product data sheet
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Rev. 01 — 11 April 2006
32 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 43. Dynamic characteristics …continued
VCCA = VCCD = 3 V; Tamb = 25 °C; all values are given in RMS; unless otherwise specified.
Symbol
Parameter
Conditions
D/Dref(ext)
external reference divider
ratio
external reference frequency; fi = 13 MHz
Min
Typ
Max
Unit
FM
fref(RF) = 10 kHz
-
650
-
fref(RF) = 33.333 kHz
-
195
-
fref(RF) = 50 kHz
-
130
-
-
1625
-
high current range
300
350
410
µA
low current range
200
250
300
µA
high current range
−200
−250
−300
µA
low current range
−140
−170
−200
µA
-
13
-
bit
AM
fref(RF) = 1 kHz
Charge pump: pin CPOUT
Io(sink)
output sink current
Io(source)(M) peak source output current
IF counter
NIFc
IF counter length
NIFc(result)
IF counter result
in-window or out-window
-
1
-
bit
Vsens
sensitivity voltage
FM
-
5
-
µV
AM
-
-
-
µV
fIF(window)
IF window width frequency
FM
bit IFW = 0
−10
+10
kHz
bit IFW = 1
−20
+20
kHz
bit IFW = 0
−2
+2
kHz
bit IFW = 1
−4
+4
kHz
AM
IF counter time
tIFc
td(IFc)
IF counter delay time
period measuring time
FM
-
20
-
ms
AM
-
5
-
ms
-
5
-
ms
bit AMDELAY = 0
-
40
-
ms
bit AMDELAY = 1
-
80
-
ms
FM
AM
[1]
Works with digital input signal from 0 V to 1.4 V.
[2]
Programmable frequency range of the synthesizer referred to the antenna input.
TEA5777_1
Product data sheet
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Rev. 01 — 11 April 2006
33 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 44. FM performance
VCCA = VCCD = 3 V; Tamb = 25 °C; fRF = 100 MHz; fmod = 1 kHz; ∆f = 22.5 kHz; τdeemp = 50 µs; all AC values are given in
RMS; see test circuit of Figure 9; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
measured between pins RFIN1 and
RFIN2
-
300
-
Ω
-
4
-
pF
-
2.7
3.5
µV
-
1000
-
mV
THD < 1 %
75
102.7
-
kHz
THD < 1.5 %
75
110.1
-
kHz
-
97
-
dBµV
-
96
-
dBµV
Inputs
Input: pins RFIN1 and RFIN2
Ri
input resistance
Ci
input capacitance
FM dummy
Vi
input voltage
Vi = Vi2 = sensitivity at dummy input;
(S+N)/N = 26 dB; L = R;
Baud(−3dB) = 300 Hz to 15 kHz
A-weighted; fIF = 133.333 kHz
[1]
large signal voltage handling capacity;
THD < 10 %
FM channel
∆fAF(M)
peak AF frequency deviation
Vi2 = 1 mV; fmod = 1 kHz, L = R;
fIF = 133.333 kHz
IP3ib
in-band third-order intercept
point
∆f1 = 200 kHz; ∆f2 = 400 kHz;
fRF = 98 MHz
[2]
IP3ob
out-band third-order intercept
point
∆f1 = 5 MHz; ∆f2 = 10 MHz;
fRF = 88 MHz or 103 MHz
[2]
S+300
high-side 300 kHz selectivity
40
-
-
dB
S−300
low-side 300 kHz selectivity
35
-
-
dB
αimage
image rejection
fRF = 87.5 MHz to 108 MHz
25
41
-
dB
Baud(−3dB)
−3 dB audio bandwidth
Vi2 = 1 mV; ∆fFM(max) = 22.5 kHz
-
-
50
Hz
12 500 -
-
Hz
low-end
high-end
[3]
PSRR
power supply rejection ratio
∆VCCA = 147 mV (RMS); fripple = 1 kHz
-
42
-
dB
αAM
AM suppression
100 µV < Vi2 < 10 mV; m = 0.3;
fmod = 1 kHz
-
50
-
dB
I and Q channel IF filter
fIF
IF frequency
fstep = 33.333 kHz
-
133.333 -
kHz
fstep = 10 kHz or 50 kHz
-
150
-
kHz
∆fc(IF)
IF center frequency deviation
all combinations
-
-
5.5
kHz
BIF
IF filter bandwidth
fIF = 133.333 kHz
108
110
112
kHz
fIF = 150 kHz
123
125
127
kHz
Outputs
MPX output: pin MPXOUT
Vo
Io(AC)M
output voltage
Vi2 = 1 mV
fIF = 133.333 kHz
75
104
125
mV
fIF = 150 kHz
60
82
100
mV
-
100
-
µA
peak AC output current
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
34 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 44. FM performance …continued
VCCA = VCCD = 3 V; Tamb = 25 °C; fRF = 100 MHz; fmod = 1 kHz; ∆f = 22.5 kHz; τdeemp = 50 µs; all AC values are given in
RMS; see test circuit of Figure 9; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VO
output voltage
properly tuned
1
1.25
1.5
V
THD
total harmonic distortion
Vi2 = 1 mV; ∆f = 75 kHz; with external
τdeemp = 50 µs; Baud(−3dB) limited to
15 kHz
-
0.55
1.5
%
S/N
signal-to-noise ratio
Vi2 = 1 mV; L = R;
Baud(−3dB) = 300 Hz to 15 kHz
A-weighted; fIF = 133.333 kHz
-
60
-
dB
Zo
output impedance
300
420
550
Ω
CL
load capacitance
-
-
40
pF
RL
load resistance
33
-
-
kΩ
fIF = 133.333 kHz
70
95
120
mV
fIF = 150 kHz
55
75
95
mV
start ADC
-
5
-
µV
step size of ADC
-
4.7
-
dB
-
0.2
-
V
AF output: pins VAFL and VAFR
Vo(AF)
AF output voltage
Vi2 = 1 mV, ∆fFM(max) = 22.5 kHz
FM IF level detector
Input FM dummy
input voltage
Vi
Vi = Vi2 = detector level voltage
Level output: pin TMUTE
VO
output voltage
Vi2 = 0 V
Vi2 = 5 mV
-
0.8
-
V
Vo(slope)
output voltage slope
10 mV < Vi2 < 1 mV
-
214
-
mV/
20dB
Ro
output resistance
200
250
350
kΩ
[1]
The sensitivity at the dummy input is equivalent to EMF in a 75 Ω system.
[2]
Related to LNA input.
[3]
With a pre-emphasis of 50 µs.
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
35 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 45. AM performance
VCCA = VCCD = 3 V; Tamb = 25 °C; fRF = 918 kHz; fmod = 1 kHz; m = 0.3; τdeemp = 75 µs; Vi1 measured at input of matching
network; all AC values are given in RMS; see test circuit of Figure 9; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
-
0
-
V
Inputs
AM RF input: pin AMRFIN
VI
input voltage
II
input current
VPILDET/AMRFAGC = 0 V
-
0
-
µA
Vi
input voltage
RF sensitivity at dummy input;
Vi = Vi1; (S+N)/N = 26 dB;
A-weighting filter
-
155
-
µV
large signal voltage handling
capability; THD < 10 %
-
300
-
mV
-
2.9
-
mV/m
low-end
-
-
50
Hz
high-end
E
electric field strength
RF sensitivity with ferroceptor;
(S+N)/N = 26 dB; A-weighting filter
−3 dB audio bandwidth
Vi1 = 5 mV
[1]
AM channel
Overall data
Baud(−3dB)
1.5
2.1
-
kHz
S/N
signal-to-noise ratio
Vi1 = 5 mV; A-weighting filter
40
48
-
dB
THD
total harmonic distortion
Vi1 = 5 mV; m = 0.8;
bit AGCRF = 0 (slow);
bit AGCIF = 0 (slow);
Baud(−3dB) limited to 15 kHz
-
1
2.5
%
PSRR
power supply rejection ratio
∆VCCA = 147 mV (RMS);
fripple = 1 kHz
-
34
-
dB
S+9
high-side 9 kHz selectivity
measured at dummy input Vi1
25
32
-
dB
S−9
low-side 9 kHz selectivity
measured at dummy input Vi1
25
30
-
dB
S+27
high-side 27 kHz selectivity
measured at dummy input Vi1
45
58
-
dB
S−27
low-side 27 kHz selectivity
measured at dummy input Vi1
45
58
-
dB
S+100
high-side 100 kHz selectivity
measured at dummy input Vi1
45
59
-
dB
S−100
low-side 100 kHz selectivity
measured at dummy input Vi1
45
59
-
dB
image rejection
520 kHz ≤ fRF ≤ 1720 kHz
40
-
-
dB
minimum C[6:0] = 000 0000
-
20.5
-
pF
maximum C[6:0] = 111 1010
390
453
544
pF
-
122
-
C[6:0] = 000 0000
-
0
-
pF
C[6:0] = 111 1111
-
17
-
pF
pF
αimage
[2]
Capacitance bank
Ci
input capacitance
Nstep(bank)
number of bank steps
Calign
alignment capacitance
bit CALLIGN = 0
bit CALLIGN = 1
Calign(step)
alignment capacitance step
-
0.134
-
Nstep(align)
number of alignment steps
-
128
-
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
36 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 45. AM performance …continued
VCCA = VCCD = 3 V; Tamb = 25 °C; fRF = 918 kHz; fmod = 1 kHz; m = 0.3; τdeemp = 75 µs; Vi1 measured at input of matching
network; all AC values are given in RMS; see test circuit of Figure 9; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
LNA gain
bit LNA = 0 (5 ×)
-
14
-
dB
bit LNA = 1 (10 ×)
-
20
-
dB
VPILDET/AMRFAGC = 0 V
-
0
-
dB
VPILDET/AMRFAGC = 2 V
-
25
-
dB
RFB = 0 (low feed-back)
-
166
-
kΩ
RFB = 1 (high feed-back)
-
366
-
kΩ
RFB = 0 (low feed-back)
-
91
-
kΩ
RFB = 1 (high feed-back)
-
200
-
kΩ
LNA
GLNA
αAGC(RF)
RF AGC attenuation
input resistance
Ri
bit LNA = 0 (5 ×)
bit LNA = 1 (10 ×)
I and Q channel IF filter
fIF
IF frequency
-
21
-
kHz
∆fIF
IF frequency deviation
-
-
0.2
kHz
BIF
IF filter bandwidth
-
8
-
kHz
Outputs
AF output: pins VAFL and VAFR
Vo(AF)
AF output voltage
Vi1 = 5 mV
72
90
108
mV
VO
output voltage
properly tuned
0.55
0.65
0.75
V
Zo
output impedance
300
500
800
Ω
start ADC
-
50
-
µV
end ADC
-
2
-
mV
Vi1 = 0 V
0.1
0.15
0.3
V
Vi1 = 10 mV
0.8
1
1.2
V
100 µV< Vi1 < 1 mV
-
375
-
mV/
20dB
260
360
480
kΩ
AM IF level detector
Input AM dummy
input voltage
Vi
Vi = Vi2 = detector level voltage;
LNA = 1 and RFB = 0
Level output: pin TMUTE
output voltage
VO
Vo(slope)
output voltage slope
Zo
output impedance
[1]
With ferroceptor C8E-A0424 TOKO Inc.
[2]
Without antenna input contribution.
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
37 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 46. Stereo decoder characteristics
VCCA = VCCD = 3 V; Tamb = 25 °C; τdeemp= 50 µs; not forced to mono; all AC values are given in RMS; see test circuit of
Figure 9; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Input: pin MPXIN
VI
input voltage
0.7
0.75
0.8
V
Ri
input resistance
300
400
500
kΩ
−1.1
−0.82
−0.4
dB
MPX stereo decoder channel
Overall data
[1]
Gv
voltage gain
fmod = 1 kHz
αcs
channel separation
Vi3 = 300 mV; fmod = 1 kHz;
Vpilot = 30 mV; R = 1 and L = 0 or
R = 0 and L = 1; VTMUTE = 1 V;
fIF = 133.333 kHz; Baud(−3dB)
limited to 15 kHz
26
40
-
dB
(S+N)/N
signal plus noise-to-noise ratio
measured at AF output; L = R;
Vi3 = 300 mV; fmod = 1 kHz;
Vpilot = 30 mV; A-weighted
-
68.5
-
dB
THD
total harmonic distortion
measured at AF output; L = R;
VMPXOUT = 300 mV; fmod = 1 kHz;
Vpilot = 30 mV; Baud(−3dB) limited to
15 kHz
-
0.05
0.5
%
α19
19 kHz suppression
reference 300 mV = 0 dB
23
28
-
dB
α38
38 kHz suppression
reference 300 mV = 0 dB
31
52
-
dB
switching to stereo
-
13
16
mV
switching back to mono
3
6
-
mV
mono hysteresis
6
7
8
mV
bit DEEM = 0
-
50
-
µs
bit DEEM = 1
-
75
-
µs
measured on pins VAFL and
VAFR; audio muted with bit
MUTE = 1; A-weighted
60
70
-
dB
start level
-
15
-
µV
stop level
-
150
-
µV
Pilot detector
Vpilot
pilot voltage
VTMUTE = 1 V
Integrated de-emphasis
τdeemp
de-emphasis time constant
Hard mute
αmute
mute attenuation
SDS curve (blend function)
Vi
input voltage
SDS region voltage Vi = Vi1;
Vi3 = 300 mV; fmod = 1 kHz;
Vpilot = 30 mV; R = 1 and L = 0 or
R = 0 and L = 1; bit SDSOFF = 0;
bit DOFF = 0; bit FOMO = 0
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
38 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 46. Stereo decoder characteristics …continued
VCCA = VCCD = 3 V; Tamb = 25 °C; τdeemp= 50 µs; not forced to mono; all AC values are given in RMS; see test circuit of
Figure 9; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
AF output: pins VAFL and VAFR
Vo(AF)
AF output voltage
measured with respect to input pin
MPXIN; Vi3 = 100 mV; L = R;
fmod = 1 kHz
83
91
99
mV
Io(sink)M
peak sink output current
Vi3 = 100 mV; L = R; fmod = 1 kHz
-
60
-
µA
VO
output voltage
measured with respect to input pin
MPXIN; FM mode
0.675
0.75
0.825
V
Ro
output resistance
300
500
800
Ω
[1]
This includes the attenuation due to the de-emphasis. At 1 kHz this is approximately 0.4 dB for 50 µs.
TEA5777_1
Product data sheet
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Rev. 01 — 11 April 2006
39 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
13. Application information
13.1 AM coil requirements and alignment
The AM receiver is a magnetic field receiver. It can be used with a ferroceptor or an
antenna. In both cases, the antenna can be seen as an inductor that should be in
resonance with the on-chip C-bank at the frequency of interest. The C-bank values are
such that a nominal device and nominal antenna inductor value result in the correct tuning
grid depending upon bit STEP0; see Table 16 and Table 27.This puts requirements on the
nominal value and tuning range of the AM antenna. Due to spread an alignment is
needed.
13.1.1 AM coil requirements
In order to align the antenna C-bank the antenna coil must meet the requirements of
Table 47.
Table 47.
AM coil requirements
Parameter
Value
Nominal value
203 µH
Tuning range needed for alignment
(excluding own tolerance)
± 16 %
Optimal TC1[1]
−50 ppm/K
[1]
Optimal means that the LC product (L of AM coil and C of C-bank) has zero TC1, since
TC1(C-bank) = +50 ppm/K. Having TC1(L of AM coil) equal to −50 ppm/K is not a hard requirement.
However, it is advisable to keep the TC1(LC product) < 350 ppm/K.
13.1.2 AM coil alignment
Alignment is setting the right C-align value and tuning the AM coil. This is done as follows:
1. Set C-align = 0
2. Measure the resonance frequency 1 (frsn1) with C-bank = 0
3. Measure the resonance frequency 2 (frsn2) with C-bank = 122
4. Set C-bank = 0:
– Tune C-align until the resonance frequency 3 becomes frsn3
– Tune AM coil until the resonance frequency 4 becomes frsn4
The frsn3 and frsn4 values can be calculated based upon frsn1 and frsn2.
This procedure only has to be done once in order to fit the AM coil and device together.
The C-align data has to be stored in the microcontroller and should be written every time
the device is powered up.
For C-align the internal digital controlled capacitor is used in principle. It is also possible to
use an external trim capacitor (0 pF to 17 pF) instead. This has the advantage that no
alignment data has to be stored in the microcontroller at the cost of one trim capacitor.
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
40 of 47
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xxxxxxxxxxxxxxxx xxxxxxxxxxxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x
Vi3
24
RFIN1
C17
R12
L3
C16
C14
C15
GNDRF
RFIN2
PILDET/AMRFAGC
VAMLNA
AGC2CAP
GNDA
V25DIG
VAFL
VREF
17
25
C21
16
26
15
27
14
28
13
TEA5777HL
29
12
30
11
31
10
32
9
CPOUT
1
2
3
4
5
6
7
R10
VCCA
TMUTE
VCC
C6
WRITE_READ
DATA
write/read
data
CLOCK
clock
XTAL1
GNDD
X1
40 MHz
XTAL2
8
R8
VCC
L6
L2
AM dummy
Vi(ext)
C19
R15
C11
R4
D8
D9
R14
Vi1
50 Ω
Fig 9. Test circuit
001aab437
TEA5777
41 of 47
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
L1
C12
bus
control
Low-power AM/FM stereo radio for handheld applications
Rev. 01 — 11 April 2006
50 Ω
18
C1
VCCD
C18
19
SWPORT2/EXTIN
L4
C7
SWPORT1
Vi2
R13
20
AMRFIN
GNDIF
FM dummy
R11
V25IF
21
GNDVCO_AMRF
C5
22
VCOTANK2
BUSMODE
23
VCOTANK1
VCC
C20
MPXIN
VAFR
MPXOUT
C10
Philips Semiconductors
14. Test information
TEA5777_1
Product data sheet
audio
R L
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 48.
Test circuit components
Part
Specification
number Value
Tolerance
Remark
Type
C1
100 nF
20 %
C0603
C5
3.3 µF
20 %
6V3
C6
100 nF
20 %
C0603
C7
2.2 µF
20 %
6V3
C10
220 nF
20 %
C0805
C11
15 nF
20 %
C0603
C12
220 nF
20 %
C0805
C14
1 µF
20 %
C1206
C15
3.3 µF
20 %
6V3
B45196E1335M10*, EPCOS
C16
33 pF
5%
C0603
NP0
C17
39 pF
5%
C0603
NP0
C18
12 pF
5%
C0603
NP0
C19
2.2 µF
20 %
6V3
B45196E1225M10*, EPCOS
C20
220 nF
20 %
C0603
NP0
C21
1 µF
20 %
16 V
B45196E3105M10*, EPCOS
D8
BB202
D9
BB202
L1
33 nH
5%
Q = 40
TOKO, LLQ1608-A33N_J
L2
33 nH
5%
Q = 40
TOKO, LLQ1608-A33N_J
L3
120 nH
5%
L4
220 nH
5%
L6
200 nH
R4
2.2 kΩ
R8
100 W
20 %
R0603
R10
47 W
20 %
R0603
R11
10 W
5%
R0603
(part of the FM dummy, i.e. 50 Ω to 75 Ω)
R12
60 W
5%
R0603
(part of the FM dummy, i.e. 50 Ω to 75 Ω)
R13
45 W
5%
R0603
(part of the FM dummy, i.e. 50 Ω to 75 Ω)
R14
51 W
5%
R0603
(part of the AM dummy)
R15
1W
5%
R0603
(part of the AM dummy)
X1
4 MHz
HC49
NDK
low leakage (< 5 nA), X7R
TOKO, LLQ1608-AR220N_J
tuning range larger than −16 % to +16 %;
Sagami 940927266B (part of the AM dummy)
R0603
TEA5777_1
Product data sheet
B45196E1225M10*, EPCOS
TOKO, LLQ1608-AR120N_J
Q > 120
20 %
B45196E1335M10*, EPCOS
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
42 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
15. Package outline
HVQFN48: plastic thermal enhanced very thin quad flat package; no leads;
48 terminals; body 7 x 7 x 0.85 mm
A
B
D
SOT619-1
terminal 1
index area
A
E
A1
c
detail X
C
e1
1/2 e
e
24
y
y1 C
v M C A B
w M C
b
13
L
25
12
e
e2
Eh
1/2 e
1
36
terminal 1
index area
48
37
Dh
X
0
2.5
scale
DIMENSIONS (mm are the original dimensions)
UNIT
mm
A(1)
max.
A1
b
1
0.05
0.00
0.30
0.18
5 mm
c
D (1)
Dh
E (1)
Eh
0.2
7.1
6.9
5.25
4.95
7.1
6.9
5.25
4.95
e
e1
5.5
0.5
e2
L
v
5.5
0.5
0.3
0.1
w
0.05
y
y1
0.05
0.1
Note
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.
REFERENCES
OUTLINE
VERSION
IEC
JEDEC
JEITA
SOT619-1
---
MO-220
---
EUROPEAN
PROJECTION
ISSUE DATE
01-08-08
02-10-18
Fig 10. Package outline SOT619-1 (HVQFN48)
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
43 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
LQFP32: plastic low profile quad flat package; 32 leads; body 7 x 7 x 1.4 mm
SOT358-1
c
y
X
24
A
17
16
25
ZE
e
E HE
A A2 A
1
(A 3)
wM
θ
bp
Lp
pin 1 index
L
32
9
detail X
1
8
e
ZD
v M A
wM
bp
D
B
HD
v M B
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A
max.
A1
A2
A3
bp
c
D (1)
E (1)
e
HD
HE
L
Lp
v
w
y
mm
1.6
0.20
0.05
1.45
1.35
0.25
0.4
0.3
0.18
0.12
7.1
6.9
7.1
6.9
0.8
9.15
8.85
9.15
8.85
1
0.75
0.45
0.2
0.25
0.1
Z D (1) Z E (1)
0.9
0.5
0.9
0.5
θ
o
7
o
0
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
VERSION
IEC
JEDEC
SOT358 -1
136E03
MS-026
JEITA
EUROPEAN
PROJECTION
ISSUE DATE
03-02-25
05-11-09
Fig 11. Package outline SOT358-1 (LQFP32)
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
44 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
16. Abbreviations
Table 49.
Abbreviations
Acronym
Description
ADC
Analog-to-Digital Converter
AGC
Automatic Gain Control
BiCMOS
Bi-polar Complementary Metal-Oxide Semiconductor
FET
Field-Effect Transistor
GSM
Global System for Mobile communication
HBM
Human Body Model
I/Q
In-phase/Quadrature-phase
LNA
Low Noise Amplifier
LW
Long Wave
MOSFET
Metal-Oxide-Semiconductor Field-Effect Transistor
MPX
Multiplex
MM
Machine Model
MW
Medium Wave
OIRT
Organisation Internationale de Radiodiffusion et de Télévision (International
Radio and Television Organization)
PLL
Phase-Locked Loop
RDS
Radio Data System
RSSI
Receiver Signal Strength Information
SDS
Signal Dependent Stereo
VCO
Voltage Controlled Oscillator
17. Revision history
Table 50.
Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
TEA5777_1
20060411
Product data sheet
-
-
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
45 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
18. Legal information
18.1 Data sheet status
Document status[1][2]
Product status[3]
Definition
Objective [short] data sheet
Development
This document contains data from the objective specification for product development.
Preliminary [short] data sheet
Qualification
This document contains data from the preliminary specification.
Product [short] data sheet
Production
This document contains the product specification.
[1]
Please consult the most recently issued document before initiating or completing a design.
[2]
The term ‘short data sheet’ is explained in section “Definitions”.
[3]
The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.semiconductors.philips.com.
18.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Philips Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local Philips Semiconductors
sales office. In case of any inconsistency or conflict with the short data sheet,
the full data sheet shall prevail.
18.3 Disclaimers
General — Information in this document is believed to be accurate and
reliable. However, Philips Semiconductors does not give any representations
or warranties, expressed or implied, as to the accuracy or completeness of
such information and shall have no liability for the consequences of use of
such information.
Right to make changes — Philips Semiconductors reserves the right to
make changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Suitability for use — Philips Semiconductors products are not designed,
authorized or warranted to be suitable for use in medical, military, aircraft,
space or life support equipment, nor in applications where failure or
malfunction of a Philips Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. Philips Semiconductors accepts no liability for inclusion and/or use
of Philips Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Philips Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) may cause permanent
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Terms and conditions of sale — Philips Semiconductors products are sold
subject to the general terms and conditions of commercial sale, as published
at http://www.semiconductors.philips.com/profile/terms, including those
pertaining to warranty, intellectual property rights infringement and limitation
of liability, unless explicitly otherwise agreed to in writing by Philips
Semiconductors. In case of any inconsistency or conflict between information
in this document and such terms and conditions, the latter will prevail.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
18.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
I2C-bus — logo is a trademark of Koninklijke Philips Electronics N.V.
19. Contact information
For additional information, please visit: http://www.semiconductors.philips.com
For sales office addresses, send an email to: [email protected]
TEA5777_1
Product data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 11 April 2006
46 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
20. Contents
1
2
2.1
2.2
2.3
3
4
5
6
7
7.1
7.2
8
8.1
8.1.1
8.1.2
8.1.3
8.1.4
8.1.5
8.1.6
8.2
8.2.1
8.2.2
8.2.3
8.2.4
8.2.5
8.3
8.3.1
8.3.2
8.3.3
8.3.4
8.4
8.4.1
8.4.2
8.4.3
8.4.4
8.5
8.6
9
9.1
9.2
9.3
9.3.1
9.3.2
9.3.3
9.4
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
AM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
FM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Quick reference data . . . . . . . . . . . . . . . . . . . . . 2
Ordering information . . . . . . . . . . . . . . . . . . . . . 4
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pinning information . . . . . . . . . . . . . . . . . . . . . . 6
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 7
Functional description . . . . . . . . . . . . . . . . . . . 9
AM radio part . . . . . . . . . . . . . . . . . . . . . . . . . 10
AM RF amplifier . . . . . . . . . . . . . . . . . . . . . . . 10
Tuning AM antenna circuit . . . . . . . . . . . . . . . 10
AM I/Q mixer. . . . . . . . . . . . . . . . . . . . . . . . . . 10
AM VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
AM IF filter . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
AM IF amplification and AM detection . . . . . . 11
FM radio part . . . . . . . . . . . . . . . . . . . . . . . . . 11
Low noise RF amplifier . . . . . . . . . . . . . . . . . . 11
FM I/Q mixer . . . . . . . . . . . . . . . . . . . . . . . . . . 11
FM VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
FM IF filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
FM demodulator . . . . . . . . . . . . . . . . . . . . . . . 12
Stereo decoder . . . . . . . . . . . . . . . . . . . . . . . . 12
MPX decoder . . . . . . . . . . . . . . . . . . . . . . . . . 12
Signal strength depending mono/stereo blend 12
Pilot detector. . . . . . . . . . . . . . . . . . . . . . . . . . 12
De-emphasis. . . . . . . . . . . . . . . . . . . . . . . . . . 12
Tuning function . . . . . . . . . . . . . . . . . . . . . . . . 12
Reference frequency generation . . . . . . . . . . 13
Crystal oscillator . . . . . . . . . . . . . . . . . . . . . . . 13
IF counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Automatic search operation . . . . . . . . . . . . . . 13
RF level information (RSSI) . . . . . . . . . . . . . . 14
Software programmable ports . . . . . . . . . . . . 14
Control functions via I2C-bus and 3-wire bus 15
Bus interface. . . . . . . . . . . . . . . . . . . . . . . . . . 15
Bus protocol . . . . . . . . . . . . . . . . . . . . . . . . . . 15
I2C-bus mode . . . . . . . . . . . . . . . . . . . . . . . . . 16
Write mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Read mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Dbus function in I2C-bus mode (silent readout) 17
3-wire bus mode . . . . . . . . . . . . . . . . . . . . . . . 18
9.4.1
9.4.2
9.4.3
9.5
9.5.1
9.5.1.1
9.5.1.2
9.5.2
9.5.2.1
9.5.2.2
10
11
12
13
13.1
13.1.1
13.1.2
14
15
16
17
18
18.1
18.2
18.3
18.4
19
20
Write mode. . . . . . . . . . . . . . . . . . . . . . . . . . .
Read mode. . . . . . . . . . . . . . . . . . . . . . . . . . .
Dbus function in 3-wire mode (silent readout)
Data transfer in I2C-bus and 3-wire mode . . .
Register definition in write mode . . . . . . . . . .
FM write mode . . . . . . . . . . . . . . . . . . . . . . . .
AM write mode . . . . . . . . . . . . . . . . . . . . . . . .
Register definition in read mode . . . . . . . . . .
FM read mode . . . . . . . . . . . . . . . . . . . . . . . .
AM read mode . . . . . . . . . . . . . . . . . . . . . . . .
Limiting values . . . . . . . . . . . . . . . . . . . . . . . .
Thermal characteristics . . . . . . . . . . . . . . . . .
Characteristics . . . . . . . . . . . . . . . . . . . . . . . .
Application information . . . . . . . . . . . . . . . . .
AM coil requirements and alignment . . . . . . .
AM coil requirements . . . . . . . . . . . . . . . . . . .
AM coil alignment. . . . . . . . . . . . . . . . . . . . . .
Test information. . . . . . . . . . . . . . . . . . . . . . . .
Package outline . . . . . . . . . . . . . . . . . . . . . . . .
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . .
Revision history . . . . . . . . . . . . . . . . . . . . . . .
Legal information . . . . . . . . . . . . . . . . . . . . . .
Data sheet status . . . . . . . . . . . . . . . . . . . . . .
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . .
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . .
Contact information . . . . . . . . . . . . . . . . . . . .
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18
19
19
20
20
20
22
25
25
26
28
28
29
40
40
40
40
41
43
45
45
46
46
46
46
46
46
47
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© Koninklijke Philips Electronics N.V. 2006.
All rights reserved.
For more information, please visit: http://www.semiconductors.philips.com.
For sales office addresses, email to: [email protected].
Date of release: 11 April 2006
Document identifier: TEA5777_1