ETC TH71101

TH71101
315/433MHz
FSK/FM/ASK Receiver
Features
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Single superhet architecture for low external component count
FSK for digital data and FM reception for analog signal transmission
FM/FSK demodulation with phase-coincidence demodulator
Low current consumption in active mode and very low standby current
Switchable LNA gain for improved dynamic range
RSSI allows signal strength indication and ASK detection
Surface mount package LQFP32
Ordering Information
Part No.
Temperature Range
Package
TH71101
-40 °C to 85°C
LQFP32
Application Examples
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General digital and analog 315 MHz or 433 MHz ISM band usage
Low-power telemetry
Alarm and security systems
Keyless car and central locking
Pagers
Technical Data Overview
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Input frequency range: 300 MHz to 450 MHz
Power supply range: 2.5 V to 5.5 V at 315 MHz and 2.7 V to 5.5 V at 433 MHz
Temperature range: -40 °C to +85 °C
Operating current: 6.5 mA at low gain and 8.2 mA at high gain mode
Standby current: < 100 nA
1)
with 40 kHz IF filter BW (incl. SAW front-end filter loss)
Sensitivity: -111 dBm
2)
Sensitivity: -104 dBm with 150 kHz IF filter BW (incl. SAW front-end filter loss)
Range of IF: 455 kHz to 21.4 MHz
Maximum input level: –10 dBm at ASK and 0 dBm at FSK
Image rejection: > 55 dB (e.g. with SAW front-end filter and at 10.7 MHz IF)
Spurious emission: < -70 dBm
Input frequency acceptance: ±50 kHz (with AFC option)
RSSI range: 70 dB
Frequency deviation range: ±5 kHz to ±120 kHz
Maximum data rate: 80 kbit/s NRZ
Maximum analog modulation frequency: 15 kHz
1)
2)
at ± 8 kHz FSK deviation, BER = 3⋅10 and phase-coincidence demodulation
-3
at ± 50 kHz FSK deviation, BER = 3⋅10 and phase-coincidence demodulation
TH71101 Data Sheet
3901071101
-3
Page 1 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
General Description
The TH71101 receiver IC consists of the following building blocks
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PLL synthesizer (PLL SYNTH) for generation of the local oscillator signal LO
Parts of the PLL SYNTH are the high-frequency VCO1, the feedback divider DIV_16,
a phase-frequency detector (PFD) with charge pump (CP) and a crystal-based reference oscillator (RO)
Low-noise amplifier (LNA) for high-sensitivity RF signal reception
First mixer (MIX1) for down-conversion of the RF signal to the IF
IF pre amplifier which is a mixer cell (MIX2) that operates as an amplifier
IF amplifier (IFA) to amplify and limit the IF signal and for RSSI generation
Phase coincidence demodulator (DEMOD) with third mixer (MIX3) to demodulate the IF signal
Operational amplifier (OA) for data slicing, filtering and ASK detection
Bias circuitry for bandgap biasing and circuit shutdown
With the TH71101 receiver chip, various circuit configurations can be arranged in order to meet a number of
different customer requirements. For FM/FSK reception the IF tank used in the phase coincidence demodulator can be constituted either by a ceramic resonator or an LC tank (optionally with a varactor diode to create
an AFC circuit). In ASK configuration, the RSSI signal is feed to an ASK detector, which is constituted by the
operational amplifier.
Demodulation
Type of receiver
FM / FSK
narrow-band RX with ceramic demodulation tank
FM / FSK
wide-band RX with LC demodulation tank
ASK
RX with RSSI-based demodulation
A double-conversion variant, called TH71102, is also available. This receiver IC allows a higher degree of
image rejection, achieved in conjunction with an RF frontend filter. Both RXICs have the same die. At the
TH71102, the second mixer (MIX2) is used to down-convert the first IF (IF1) to the second IF (IF2). At the
TH71101, MIX2 operates as an amplifier.
Efficient RF frontend filtering is realized by using a SAW, ceramic or helix filter in front of the LNA and by
adding an LC filter at the LNA output.
TH71101 Data Sheet
3901071101
Page 2 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
18
OUT_OA
19
20
OA
OAN
OAP
24
23
OUTN
OUTP
Block Diagram
17
VCC_BIAS
BIAS
ENRX
28
16
MIX3
IN_DEM
22
VEE_BIAS
15
OUT_IFA
27
14
VCC_PLL
VEE_RO
26
13
FPC2
RO
RO
IFA
21
25
RSSI
12
FBC1
11
PFD
IN_IFA
8
MIX2
29
VCC_MIX
DIV_16
9
CP
IF
OUT_MIX2
LF
10
VEE_IF
IF
7
IF1N
VCO1
MIX1
5
VEE_MIX
LO
6
IF1P
4
IN_MIX1
VEE_LNA
GAIN_LNA
VCC_LNA
32
LNA
31
1
VEE_LNAC
IN_LNA
2
30
3
OUT_LNA
Fig. 1: TH71101 block diagram
TH71101 Data Sheet
3901071101
Page 3 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
Frequency Planning
Frequency planning is straightforward for single-conversion applications because there is only one IF that
might be chosen, and then the only possible choice is low-side or high-side injection of the LO signal (which
is now the one and only LO signal in the receiver).
The receiver’s single-conversion architecture requires careful frequency planning. Besides the desired RF
input signal, there are a number of spurious signals that may cause an undesired response at the output.
Among them is the image of the RF signal that must be suppressed by the RF front-end filter.
By using the internal PLL synthesizer of the TH71101 with the fixed feedback divider ratio of N = 16 (DIV_16),
two types of down-conversion are possible: low-side injection of LO and high-side injection of LO. The following table summarizes some equations that are useful to calculate the crystal reference frequency (REF),
the IF and the LO frequency respectively, for a given RF.
Injection type
low
high
REF
(RF – IF)/16
(RF + IF)/16
LO
16•REF
16•REF
IF
RF – LO
LO – RF
RF image
RF – 2IF
RF + 2IF
The following table depicts crystal, LO and image signals considering the examples of 315 MHz and
433.6 MHz RF reception at IF = 10.7 MHz.
Signal type
RF = 315 MHz
RF = 315 MHz
RF = 433.6 MHz
RF = 433.6 MHz
Injection type
low
high
low
high
19.01875
20.35625
26.43125
27.76875
LO / MHz
304.3
325.7
422.9
444.3
RF image / MHz
293.6
336.4
412.2
455.0
REF / MHz
The selection of the reference crystal frequency is based on some assumptions. As for example: the image
frequency should not be in a radio band where strong interfering signals might occur (because they could
represent parasitic receiving signals), the LO signal should be in the range of 300 MHz to 430 MHz (because
this is the optimum frequency range of the VCO1). Furthermore the IF should be as high as possible to
achieve highest RF image rejection. The columns in bold depict the selected frequency plans to receive at
315 MHz and 433.6 MHz, respectively.
TH71101 Data Sheet
3901071101
Page 4 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
Pin Definition and Description
Pin No.
3
Name
OUT_LNA
I/O Type
Functional Schematic
analog
output
Description
LNA open-collector output,
to be connected to external
LC tank that resonates at RF
OUT_LNA
3
31
1
IN_LNA
VEE_LNAC
analog
input
IN_LNA
ground
31
LNA input, approx.
26Ω single-ended
5k
VEE_LNAC
1
2
GAIN_LNA
analog
input
ground of LNA core
(cascode)
LNA gain control (CMOS
input with hysteresis)
GAIN_LNA
400Ω
2
4
IN_MIX1
analog
input
MIX1 input, approx. 33Ω
single-ended
13Ω
IN_MIX1
4
13Ω
500µA
5
VEE_MIX
ground
6
IF1P
analog I/O
LNA biasing ground
VCC
20p
IF1P
7
IF1N
analog I/O
IF1N
20p
7
6
open-collector output, to be
connected to external LC
tank that resonates at first IF
2x500µA
VEE
VEE
8
VCC_MIX
supply
9
OUT_MIX2
analog
output
open-collector output, to be
connected to external LC
tank that resonates at first IF
MIX1 and MIX2 positive
supply
6.8k
OUT_MIX2
MIX2 output, approx. 330Ω
output impedance
130Ω
9
230µA
10
VEE_IF
TH71101 Data Sheet
3901071101
ground
ground for MIX2, IFA and
DEMOD
Page 5 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
Pin No.
11
12
Name
IN_IFA
FBC1
I/O Type
Functional Schematic
analog
input
analog I/O
IN_IFA
FBC1
11
12
2.2k
2.2k
200µA
FBC2
analog I/O
IFA input, approx. 2.2kΩ
input impedance
VCC
VCC
VEE
VCC
13
Description
FBC2
to be connected to external
IFA feedback capacitor
VEE
VEE
to be connected to external
IFA feedback capacitor
13
VEE
14
VCC_IF
supply
positive supply for IFA,
DEMOD
15
OUT_IFA
analog I/O
IFA output and MIX3 input
(of DEMOD)
OUT_IFA
15
40µA
16
IN_DEM
analog
input
DEMOD input, to MIX3 core
47k
IN_DEM
16
17
VCC_BIAS
supply
positive supply of general
bias system and OA
18
OUT_OA
analog
output
OA output, 40uA current
drive capability
OUT_OA
50Ω
18
19
OAN
analog
input
20µA
OAN
20
OAP
TH71101 Data Sheet
3901071101
analog
input
50Ω
19
Page 6 of 20
50Ω
negative OA input, input
voltage limited to approx.
0.7 Vpp between pins OAP
and
OAN
OAP
negative OA input, input
20
voltage limited to approx.
0.7 Vpp between pins OAP
and OAN
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
Pin No.
21
Name
RSSI
I/O Type
Functional Schematic
analog
output
50Ω
RSSI
Description
RSSI output, for RSSI and
ASK detection, approx.
36kΩ output impedance
I (Pi)
21
36k
22
VEE_BIAS
ground
ground for general bias
system and OA
23
OUTP
analog
output
FSK/FM positive output,
output impedance of
100kΩ to 300kΩ
OUTP
OUTN
50Ω
24
OUTN
analog
25
VEE_RO
ground
ground of dividers, PFD and
RO
26
RO
analog
input
RO input, Colpitts type
oscillator with internal feedback capacitors
23
24
20µA
20µA
50k
RO
26
FSK/FM negative output,
output impedance of
100kΩ to 300kΩ
30p
30p
27
VCC_PLL
supply
positive supply of RO, DIV,
PFD and charge pump
28
ENRX
digital
input
mode control input
(CMOS Input)
ENRX
1.5k
28
29
LF
analog
output
charge pump output and
VCO1 control input
LF
200Ω
29
400Ω
4p
30
VEE_LNA
ground
LNA biasing ground
32
VCC_LNA
supply
positive supply of LNA
biasing
TH71101 Data Sheet
3901071101
Page 7 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
Technical Data
Mode Configurations
ENRX
Mode
0
SBY
1
ON
Note: ENRX are pulled down internally
Description
standby mode
entire chip active
LNA Gain Control
VGAIN_LNA
Mode
< 0.8 V
> 1.4 V
HIGH GAIN
LOW GAIN
Description
LNA set to high gain by voltage at GAIN_LNA
LNA set to low gain by voltage at GAIN_LNA
Note: hysteresis between gain modes to ensure stability
Absolute Maximum Ratings
Parameter
Supply voltage
Input voltage
Input RF level
Storage temperature
Electrostatic discharge
Symbol
Vcc
VIN
Pimax
TSTG
ESD
Condition / Note
Min
Max
Unit
0
- 0.3
-40
7.0
VCC+0.3
10
+125
V
V
dBm
°C
human body model,
MIL STD 833D
method 3015.7, all pins
except OUT_IFA
pin OUT_IFA
-500
-500
+500
+250
V
V
Condition
Min
Max
Unit
2.5
2.7
-40
300
±5
5.5
5.5
+85
450
±120
40
15
80
V
V
ºC
MHz
kHz
kbit/s
kHz
kbit/s
no damage
Normal Operating Conditions
Parameter
Supply voltage at 315 MHz
Supply voltage at 433 MHz
Operating temperature
Input frequency
Frequency deviation
FSK data rate
FM bandwidth
ASK data rate
TH71101 Data Sheet
3901071101
Symbol
Vcc, 315
Vcc, 433
Ta
fi
∆f
RFSK
fm
RASK
fi ≤ 400 MHz
fi > 400 MHz
at FM or FSK
NRZ
NRZ
Page 8 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
DC Characteristics
all parameters under normal operating conditions, unless otherwise stated;
typical values at Ta = 23 °C and Vcc = 3 V
Parameter
Symbol
Standby current
Total supply current at low gain
ISBY
Icc, low
Total supply current at high gain
Icc, high
Opamp input offset voltage
Opamp input offset current
Opamp input bias current
RSSI voltage at low input level
Voffs
Ioffs
Ibias
VRSSI, low
RSSI voltage at high input level
VRSSI, high
Condition
ENRX=0
ENRX=1,
LNA at LOW GAIN
ENRX=1,
LNA at HIGH GAIN
IOAP – IOAN
0.5 * (IOAP + IOAN)
Pi = -65 dBm,
LNA at LOW GAIN
Pi = -35 dBm,
LNA at LOW GAIN
Min
Typ
Max
Unit
5.0
6.5
100
8.0
nA
mA
6.5
8.2
10.0
mA
-20
-50
-100
0.5
1.0
20
50
100
1.5
mV
nA
nA
V
1.25
1.9
2.45
V
AC System Characteristics
all parameters under normal operating conditions, unless otherwise stated;
all parameters based on test circuits for FSK (Fig. 2), FM (Fig. 4) and ASK (Fig. 5), respectively;
typical values at Ta = 23 °C and Vcc = 3 V, RF at 433.6 MHz, second IF at 10.7 MHz
Parameter
Symbol
start-up time – FSK/FM
TFSK
start-up time – ASK
TASK
input sensitivity – FSK
(narrow band)
Pmin, n
input sensitivity – FSK
(wide band)
Pmin, w
input sensitivity – ASK
PminA, n
(narrow band)
input sensitivity – ASK
PminA, w
(wide band)
maximum input signal – FSK/FM Pmax, FM
maximum input signal – ASK
Pmax, ASK
spurious emission
image rejection
blocking immunity
VCO gain
Charge pump current
Pspur
∆Pimag
∆Pblock
KVCO
ICP
Condition
Min
ENRX from 0 to 1,
valid data at output
depends on ASK
detector time constant,
valid data at output
BIF2 = 40kHz
∆f = ±15kHz (FSK/FM)
-3
BER ≤ 3⋅10
BIF2 = 150kHz
∆f = ±50kHz (FSK/FM)
-3
BER ≤ 3⋅10
BIF2 = 40kHz
-3
BER ≤ 3⋅10
BIF2 = 150kHz
-3
BER ≤ 3⋅10
-3
BER ≤ 3⋅10
LNA at LOW GAIN
-3
BER ≤ 3⋅10
LNA at LOW GAIN
Typ
Max
Unit
0.9
ms
R3•C12
+
TFSK
ms
-111
dBm
-104
dBm
-109
dBm
-106
dBm
0
dBm
-10
dBm
-70
∆fblock > ±2MHz, note 1
55
57
250
60
dBm
dB
dB
MHz/V
µA
Notes: 1. desired signal with FSK/FM or ASK modulation, CW blocking signal
TH71101 Data Sheet
3901071101
Page 9 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
Test Circuits
FSK Reception
C14 C15
C16
OAN
OAP
RSSI
C1
CP
C13
IN_DEM
C12
OUT_IFA
RO
VCC
OUT_OA
XTAL
VEE
VEE
OUTP
OUTN
VCC
VCC
VCC
VCC
VCC
CERRES
C11
FBC2
LF
FBC1
C9
C3
IN_IFA
VCC
IF1N
IF1P
VEE
VEE
OUT_LNA
VCC
VEE
VCC
SAWFIL
L2
C5
GAIN_LNA
IN_LNA
C10
LQFP32
VEE
IN_MIX1
R1
ENRX
CERFIL
OUT_MIX2
C7
L1
C4
L3
C6
RL2
CB*
VCC
Fig. 2: Test circuit for FSK reception
TH71101 Data Sheet
3901071101
Page 10 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
FSK test circuit component list to Fig. 2
Part
Size
Value / Type
Tolerance
C1
0805
15 pF
±10%
C3
0805
1 nF
±10%
C4
0603
3.3 pF
±5%
C5
0603
3.3 pF
±5%
C6
0603
4.7 pf
±5%
C7
0603
2.2 pf
±5%
C9
0805
33 nF
±10%
C10
0603
1 nF
±10%
C11
0603
1 nF
±10%
C12
0603
1.5 pF
±5%
C13
0603
680 pF
±10%
CP
0805
10 – 12 pF
±5%
C14
0805
10 – 47 pF
±5%
C15
0805
10 – 47 pF
±5%
C16
0603
330 pF
±10%
R1
10 kΩ
470 Ω
±10%
RL1
0805
0805
RL2
0805
470 Ω
±5%
L1
0603
33 nH
±5%
L2
0603
33 nH
±5%
L3
0603
15 nH
XTAL
HC49
SMD
26.43125 MHz
@ RF = 433.6 MHz
SAWFIL
QCC8C
B3555
@ RF = 433.6 MHz
CERFIL
Leaded
type
SFE10.7MFP
@ BIF2 = 40 kHz
SMD type
SFECV10.7MJS-A
@ BIF2 = 150 kHz
SMD type
CDACV10.7MG18-A
CERRES
±5%
±5%
Description
crystal series capacitor
loop filter capacitor
capacitor to match to SAW filter input
capacitor to match to SAW filter output
LNA output tank capacitor
MIX1 input matching capacitor
IFA feedback capacitor
IFA feedback capacitor
IFA feedback capacitor
DEMOD phase-shift capacitor
DEMOD coupling capacitor
CERRES parallel capacitor
demodulator output low-pass capacitor, depending on
data rate
demodulator output low-pass capacitor, depending on
data rate
RSSI output low-pass capacitor
loop filter resistor
MIX1 bias resistor
MIX1 bias resistor
inductor to match SAW filter
inductor to match SAW filter
LNA output tank inductor
fundamental-mode crystal, Cload = 10 pF to 15pF,
C0, max = 7 pF, Rm, max = 50 Ω
±25ppm calibration
±30ppm temp.
B3dB = 860 kHz
low-loss SAW filter from EPCOS
±100 kHz
(f0 = 433.92 MHz)
TBD
ceramic filter from Murata
±40 kHz
ceramic demodulator tank from Murata
NIP – not in place, may be used optionally
TH71101 Data Sheet
3901071101
Page 11 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
FSK Circuit with AFC and Ceramic Resonator Tolerance Compensation
C14 C15
C16 C17
C18
R4
R3
VCC
VCC
OAN
OAP
RSSI
C1
CP
VD
C13
IN_DEM
C12
OUT_IFA
RO
VCC
OUT_OA
XTAL
VEE
VEE
OUTP
OUTN
R5
VCC
VCC
VCC
CERRES
C11
FBC2
LF
FBC1
C9
C3
IN_IFA
VCC
IF1N
IF1P
VEE
VEE
OUT_LNA
VCC
VEE
VCC
SAWFIL
L2
C5
GAIN_LNA
IN_LNA
C10
LQFP32
VEE
IN_MIX1
R1
ENRX
CERFIL
OUT_MIX2
C7
L1
L3
C4
C6
RL1
RL2
CB*
VCC
Fig. 3: Test circuit for FSK with AFC and resonator compensation
Circuit Feature
!
!
!
!
Improves input frequency acceptance range up to RFnom ±50 kHz
Eliminates calibration tolerances of ceramic resonator
Eliminates temperature tolerances of ceramic resonator
Non-inverted and inverted CMOS-compatible outputs
TH71101 Data Sheet
3901071101
Page 12 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
FSK test circuit with AFC component list to Fig. 3
Part
Size
Value / Type
Tolerance
C1
0805
15 pF
±10%
C3
0805
1 nF
±10%
C4
0603
3.3 pF
±5%
C5
0603
3.3 pF
±5%
C6
0603
4.7 pF
±5%
C7
0603
2.2 pF
±5%
C9
0805
33 nF
±10%
C10
0603
1 nF
±10%
C11
0603
1 nF
±10%
C12
0603
1.5 pF
±5%
C13
0603
680 pF
±10%
CP
0805
27 pF
±5%
C14
0805
10 – 47 pF
±5%
C15
0805
10 – 47 pF
±5%
C16
0603
330 pF
±10%
C17
33 nF
±10%
33 nF
10 nF
1 nF
±10%
10 kΩ
±10%
±10%
C18
0805
R1
R3
0805
0805
R4
R5
RL1
0805
0805
0805
100 kΩ
680 kΩ
680 kΩ
470 Ω
RL2
0805
470 Ω
±5%
L1
0603
33 nH
±5%
L2
0603
33 nH
±5%
L3
0603
15 nH
±5%
VD
SOD-323
BB535
XTAL
HC49
SMD
26.43125 MHz
@ RF = 433.6 MHz
SAWFIL
QCC8C
B3555
@ RF = 433.6 MHz
CERFIL
Leaded
type
SFE10.7MFP
@ BIF2 = 40 kHz
SMD type
SFECV10.7MJS-A
@ BIF2 = 150 kHz
SMD type
CDACV10.7MG18-A
CERRES
±10%
±10%
±5%
Description
crystal series capacitor
loop filter capacitor
capacitor to match to SAW filter input
capacitor to match to SAW filter output
LNA output tank capacitor
MIX1 input matching capacitor
IFA feedback capacitor
IFA feedback capacitor
IFA feedback capacitor
DEMOD phase-shift capacitor
DEMOD coupling capacitor
ceramic resonator loading capacitor
demodulator output low-pass capacitor, depending on
data rate
demodulator output low-pass capacitor, depending on
data rate
RSSI output low-pass capacitor
integrator capacitor, fixed
integrator capacitor, @ 0.5 to 2 kbit/s NRZ
integrator capacitor, @ 2 to 20 kbit/s NRZ
integrator capacitor, @ 20 to 40 kbit/s NRZ
loop filter resistor
varactor diode biasing resistor
integrator resistor
integrator resistor
MIX1 bias resistor
MIX1 bias resistor
inductor to match SAW filter
inductor to match SAW filter
LNA output tank inductor
varactor diode from Infineon
fundamental-mode crystal, Cload = 10 pF to 15pF,
C0, max = 7 pF, Rm, max = 50 Ω
±25ppm calibration
±30ppm temp.
B3dB = 860 kHz
low-loss SAW filter from EPCOS
±100 kHz
(f0 = 433.92 MHz)
TBD
ceramic filter from Murata
±40 kHz
ceramic demodulator tank from Murata
NIP – not in place, may be used optionally
TH71101 Data Sheet
3901071101
Page 13 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
FM Reception
C14
R6
R5
R4
C16
R3
VCC
VCC
OAN
OAP
RSSI
C1
CP
C13
IN_DEM
C12
OUT_IFA
RO
VCC
OUT_OA
XTAL
VEE
VEE
OUTP
OUTN
C15
VCC
VCC
VCC
CERRES
C11
FBC2
LF
FBC1
C9
C3
IN_IFA
VCC
IF1N
IF1P
VEE
VEE
OUT_LNA
VCC
VEE
VCC
SAWFIL
L2
C5
GAIN_LNA
IN_LNA
C10
LQFP32
VEE
IN_MIX1
R1
ENRX
CERFIL
OUT_MIX2
C7
L1
C4
L3
C6
RL1
RL2
CB*
VCC
Fig. 4: Test circuit for FM reception
TH71101 Data Sheet
3901071101
Page 14 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
FM test circuit component list to Fig. 4
Part
Size
Value / Type
Tolerance
Description
C1
0805
15 pF
±10%
C3
0805
1 nF
±10%
C4
0603
3.3 pF
±5%
C5
0603
3.3 pF
±5%
C6
0603
4.7 pF
±5%
C7
0603
2.2 pF
±5%
C9
0805
33 nF
±10%
C10
0603
1 nF
±10%
C11
0603
1 nF
±10%
C12
0603
1.5 pF
±5%
C13
0603
680 pF
±10%
crystal series capacitor
loop filter capacitor
capacitor to match to SAW filter input
capacitor to match to SAW filter output
LNA output tank capacitor
MIX1 input matching capacitor
IFA feedback capacitor
IFA feedback capacitor
IFA feedback capacitor
DEMOD phase-shift capacitor
DEMOD coupling capacitor
CERRES parallel capacitor
sallen-Key low-pass filter capacitor, to set cut-off frequency
sallen-Key low-pass filter capacitor, to set cut-off frequency
RSSI output low-pass capacitor
loop filter resistor
sallen-Key filter resistor, to set desired filter characteristic
sallen-Key filter resistor, to set desired filter characteristic
sallen-Key filter resistor, to set cut-off frequency
sallen-Key filter resistor, to set cut-off frequency
MIX1 bias resistor
MIX1 bias resistor
inductor to match SAW filter
inductor to match SAW filter
LNA output tank inductor
fundamental-mode crystal, Cload = 10 pF to 15pF,
C0, max = 7 pF, Rm, max = 50 Ω
CP
0805
10 – 12 pF
±5%
C14
0805
100 pF
±5%
C15
0805
100 pF
±5%
C16
0603
330 pF
±10%
R1
0805
10 kΩ
±10%
R3
0805
12 kΩ
±5%
R4
0805
6.8 kΩ
±5%
R5
0805
33 kΩ
±5%
R6
0805
0805
33 kΩ
470 Ω
±5%
RL2
0805
470 Ω
±5%
L1
0603
33 nH
±5%
L2
0603
33 nH
±5%
RL1
L3
0603
15 nH
XTAL
HC49
SMD
26.43125 MHz
@ RF = 433.6 MHz
SAWFIL
QCC8C
B3555
@ RF = 433.6 MHz
CERFIL
leaded
type
SFE10.7MFP @
BIF2 = 40 kHz
SMD type
SFECV10.7MJS-A
@ BIF2 = 150 kHz
SMD type
CDACV10.7MG18-A
CERRES
±5%
±5%
±25ppm calibration
±30ppm temp.
B3dB = 860 kHz
low-loss SAW filter from EPCOS
±100 kHz
(f0 = 433.92 MHz)
TBD
ceramic filter from Murata
±40 kHz
ceramic demodulator tank from Murata
NIP – not in place, may be used optionally
TH71101 Data Sheet
3901071101
Page 15 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
ASK Reception
R3
C13
VCC
OAN
OAP
RSSI
VCC
OUT_OA
XTAL
VEE
VEE
OUTP
OUTN
C12
IN_DEM
OUT_IFA
RO
C1
VCC
VCC
VCC
VCC
C11
FBC2
LF
FBC1
C9
C3
IN_IFA
VCC
IF1N
IF1P
VEE
VEE
OUT_LNA
VCC
VEE
VCC
SAWFIL
L2
C5
GAIN_LNA
IN_LNA
C10
LQFP32
VEE
IN_MIX1
R1
ENRX
CERFIL
OUT_MIX2
C7
L1
C4
L3
C6
RL1
RL2
CB*
VCC
Fig. 5: Test circuit for ASK reception
TH71101 Data Sheet
3901071101
Page 16 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
ASK test circuit component list to Fig. 5
Part
Size
Value / Type
Tolerance
C1
0805
15 pF
±10%
C3
0805
1 nF
±10%
C4
0603
3.3 pF
±5%
C5
0603
3.3 pF
±5%
C6
0603
4.7 pF
±5%
C7
0603
2.2 pF
±5%
C9
0805
33 nF
±10%
C10
0603
1 nF
±10%
C11
0603
1 nF
±10%
C12
0805
1 nF to 10 nF
±10%
C13
0603
330 pF
±10%
R1
0805
10 kΩ
±10%
R3
RL1
0603
0805
100 kΩ
470 Ω
±5%
RL2
0805
470 Ω
±5%
L1
0603
33 nH
±5%
L2
0603
33 nH
±5%
L3
0603
15 nH
XTAL
HC49
SMD
26.43125 MHz
@ RF = 433.6 MHz
SAWFIL
QCC8C
B3555
@ RF = 433.6 MHz
CERFIL
leaded
type
SFE10.7MFP @
BIF2 = 40 kHz
SMD type
SFECV10.7MJS-A
@ BIF2 = 150 kHz
±5%
±5%
Description
crystal series capacitor
loop filter capacitor
capacitor to match to SAW filter input
capacitor to match to SAW filter output
LNA output tank capacitor
MIX1 input matching capacitor
IFA feedback capacitor
IFA feedback capacitor
IFA feedback capacitor
ASK data slicer capacitor, depending on data rate
RSSI output low-pass capacitor
loop filter resistor
ASK data slicer resistor, depending on data rate
MIX1 bias resistor
MIX1 bias resistor
inductor to match SAW filter
inductor to match SAW filter
LNA output tank inductor
fundamental-mode crystal, Cload = 10 pF to 15pF,
C0, max = 7 pF, Rm, max = 50 Ω
±25ppm calibration
±30ppm temp.
B3dB = 860 kHz
low-loss SAW filter from EPCOS
±100 kHz
(f0 = 433.92 MHz)
TBD
ceramic filter from Murata
±40 kHz
NIP – not in place, may be used optionally
TH71101 Data Sheet
3901071101
Page 17 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
Package Dimensions
D
D1
24
17
16
25
E
e
E1
32
9
1
A
A2
b
8
A1
L
Fig. 6: LQFP32 (Low Quad Flat Package)
All Dimension in mm, coplanaríty < 0.1mm
E1, D1
A
A1
A2
e
b
min
0.05
1.35
0.30
7.00
0.8
max
1.60
0.15
1.45
0.45
All Dimension in inch, coplanaríty < 0.004”
min
0.002 0.053
0.012
0.276
0.031
max
0.630 0.006 0.057
0.018
TH71101 Data Sheet
3901071101
Page 18 of 20
L
0.45
E, D
α
0°
9.00
0.75
7°
0.018
0°
0.354
0.030
7°
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
Your Notes
TH71101 Data Sheet
3901071101
Page 19 of 20
Nov. 2001
Rev. 005
TH71101
315/433MHz
FSK/FM/ASK Receiver
Your Notes
Important Notice
Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it
is necessary to check with Melexis for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by Melexis for each application.
The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to
recipient or any third party shall arise or flow out of Melexis’ rendering of technical or other services.
© 2000 Melexis GmbH. All rights reserved.
For the latest version of this document. Go to our website at
www.melexis.com
Or for additional information contact Melexis Direct:
Europe and Japan:
All other locations:
Phone: +32 1361 1631
E-mail: [email protected]
Phone: +1 603 223 2362
E-mail: [email protected]
QS9000, VDA6.1 and ISO14001 Certified
TH71101 Data Sheet
3901071101
Page 20 of 20
Nov. 2001
Rev. 005