TEMIC TDA4470

TDA4470-M
Multistandard Video-IF and Quasi Parallel Sound Processing
Description
The TDA4470 is an integrated bipolar circuit for multistandard video/sound IF (VIF/SIF) signal processing in
TV/VCR and multimedia applications. The circuit
processes all TV video IF signals with negative
modulation (e.g., B/G standard), positive modulation
(e.g., L standard) and the AM, FM/NICAM sound IF
signals.
Features
D 5 V supply voltage; low power consumption
D Active carrier generation by FPLL principle
D Intercarrier output signal is gain controlled (necessary
for digital sound processing)
D Complete alignment-free AM demodulator with gain
(frequency-phase-locked-loop) for true
synchronous demodulation
controlled AF output
D Very linear video demodulation, good pulse response
and excellent intermodulation figures
D VCO circuit operates at picture carrier frequency, the
VCO frequency is switchable for L’-mode
D Alignment-free AFC without external reference
circuit, polarity of the AFC curve is switchable
D VIF-AGC for negative modulated signals (peak sync.
detection) and for positive modulation (peak white/
black level detector)
D Separate SIF-AGC with average detection
D Two independent SIF inputs
D Parallel operation of the AM demodulator and QPS
mixer (for NICAM-L stereo sound)
D Package and relevant pinning is compatible with the
single standard version TDA4472, which simplifies
the design of an universal IF module
D Tuner AGC with adjustable take over point
D Alignment-free quasi parallel sound (QPS) mixer for
FM/NICAM sound IF signals
Package: SDIP28, SO28
Ordering Information
Extended Type Number
TDA4470-MSD
TDA4470-MFLG3
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
Package
SDIP28
SO28
Remarks
Delivery in taped form
1 (16)
Preliminary Information
TDA4470-M
Ï
Ï
Block Diagram
L’ switch
Loop
filter
Offset
comp.
(optional)
Ï
VCO
Ï ÏÏ ÏÏ
18
26
0°
90°
FPLL
21
20
VCO
+
phase shift
Ï
14
Control
AFC
Ï
ÏÏ
Ï
ÏÏ
Ï
ÏÏ
Ï
Ï
ÏÏ
Ï
Ï
ÏÏ
Ï
Ï
6
VIF
VIF amp
7
CAGC
15
CBL
Tuner
Video det.
8
AGC
(VIF)
Standard
11
10
Take over
point
SIF 2
Tuner
AGC
Supply
FM det.
27
28
Ï
Ï
SIF input
switch
SIF amp
2
5
CAGC
19
ÏÏ
ÏÏ
AFC
switch
22
AFC
12
Video
13
23
17
ÏÏ
ÏÏ
ÏÏ
ÏÏ
Standard
switch
VS
CRef
24
Intercarrier
(FM / NICAM)
3
1
SIF 1
Ï
ÏÏ
Ï
Ï
Ï
Ï
Ï
Ï
ÏÏ
Ï
Ï
Ï
AGC
(SIF)
AM det.
Ï
Ï
Ï
25
AF
(AM)
4,9,16
95 10851
Figure 1. Block diagram
2 (16)
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
TDA4470-M
Circuit Description
Vision IF Amplifier
The video IF signal (VIF) is fed through a SAW filter to
the differential input (Pin 6-7) of the VIF amplifier. This
amplifier consists of three AC-coupled amplifier stages.
Each differential amplifier is gain controlled by the automatic gain control (VIF-AGC). The output signal of the
VIF amplifier is applied to the FPLL carrier generation
and the video demodulator.
Tuner-and VIF-AGC
At Pin 8, the VIF-AGC charges/discharges the AGC
capacitor to generate a control voltage for setting the gain
of the VIF amplifier and tuner in order to keep the video
output signal at a constant level. Therefore, in the case of
all negative modulated signals (e.g., B/G standard) the
sync. level of the demodulated video signal is the
criterion for a fast charge/discharge of the AGC capacitor.
For positive modulation (e.g., L standard) the peak white
level of video signal controls the charge current. In order
to reduce reaction time for positive modulation, where a
large time constant is needed, an additional black level
detector controls the discharge current in the event of
decreasing VIF input signal. The control voltage (AGC
voltage at Pin 8) is transferred to an internal control
signal, and is fed to the tuner AGC to generate the tuner
AGC current at Pin 11 (open collector output). The take
over point of the tuner AGC can be adjusted at Pin 10 by
a potentiometer or an external dc voltage (from interface
circuit or microprocessor).
FPLL, VCO and AFC
The FPLL circuit (frequency phase locked loop) consists
of a frequency and phase detector to generate the control
voltage for the VCO tuning. In the locked mode, the VCO
is controlled by the phase detector and in unlocked mode,
the frequency detector is superimposed. The VCO
operates with an external resonance circuit (L and C parallel) and is controlled by internal varicaps. The VCO
control voltage is also converted to a current and represents the AFC output signal at Pin 22. At the AFC switch
(Pin 19) three operating conditions of the AFC are possible: AFC curve “rising” or “falling” and AFC “off”.
A practicable VCO alignment of the external coil is the
adjustment to zero AFC output current at Pin 22. At center
frequency the AFC output current is equal to zero.
Furthermore, at Pin 14, the VCO center frequency can be
switched for setting to the required L’ value (L’ standard).
The optional potentiometer at Pin 26 allows an offset
compensation of the VCO phase for improved sound
quality (fine adjustment). Without a potentiometer (open
circuit at Pin 26), this offset compensation is not active.
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
The oscillator signal passes a phase shifter and supplies
the in-phase signal (0°) and the quadrature signal (90°)of
the generated picture carrier.
Video Demodulation and Amplifier
The video IF signal, which is applied from the gain
controlled IF amplifier, is multiplied with the inphase
component of the VCO signal. The video demodulator is
designed for low distortion and large bandwidth. The
demodulator output signal passes an integrated low pass
filter for attenuation of the residual vision carrier and is
fed to the video amplifier. The video amplifier is realized
by an operational amplifier with internal feedback and
8 MHz bandwidth (–3 dB). A standard dependent dc level
shift in this stage delivers the same sync. level for positive
and negative modulation. An additional noise clipping is
provided. The video signal is fed to VIF-AGC and to the
video output buffer. This amplifier with a 6 dB gain offers
easy adaption of the sound trap. For nominal video IF
modulation the video output signal at Pin 12 is 2 Vpp.
Sound IF Amplifier and SIF-AGC
The SIF amplifier is nearly identical with the 3-stage VIF
amplifier. Only the first amplifier stage exists twice and
is switchable by a control voltage at Pin 3. Therefore with
a minimal external expense it is possible to switch
between two different SAW filters. Both SIF inputs
features excellent cross-talk attenuation and an input
impedance which is independent from the switching
condition.
The SIF-AGC is related to the average level of AM- or
FM-carrier and controls the SIF amplifier to provide a
constant SIF signal to the AM demodulator and QPS
mixer.
AM Demodulator
The alignment-free AM demodulator is realized by a
synchronous detector. The modulated SIF signal from the
SIF amplifier output is multiplied in phase with the
limited SIF signal (AM is removed). The AF signal of the
demodulator output is fed to the output amplifier and to
the SIF-AGC. For all TV standards with negative video
modulation (e.g., B/G standard), the AF output signal
(Pin 25) is switched off by the standard switch.
Quasi-Parallel-Sound (QPS) Mixer
The QPS mixer is realized by a multiplier. The SIF signal
(FM or NICAM carrier) is converted to the intercarrier
frequency by the regenerated picture carrier (quadrature
signal) which is provided from the VCO. The intercarrier
signal is fed via an output amplifier to Pin 24.
3 (16)
Preliminary Information
TDA4470-M
Standard Switch
AFC Switch
To have equal polarity of the video output signal the
polarity can be switched in the demodulation stage in
accordance with the TV standard. Additional a standard
dependent dc level shift in the video amplifier delivers the
same sync. level. In parallel to this, the correct VIF-AGC
is selected for positive or negative modulated VIF signals.
In the case of negative modulation (e.g., B/G standard)
the AM output signal is switched off. For positive modulation (L standard) the AM demodulator and QPS mixer
is active. This condition allows a parallel operation of the
AM sound signal and the NICAM-L stereo sound.
The AFC output signal at Pin 22 can be controlled by a
switching voltage at Pin 19. It is possible to select an AFC
output signal with a rising- or falling AFC curve and to
switch off the AFC.
L’ Switch
VCR Mode
For the VCR mode in a TV set (external video source
selected), it is recommendable to switch off the IF circuit.
With an external switching voltage at Pin 6 or 7, the IF
amplifiers are switched off and all signal output levels at
Pins 12, 24, and 25 are according to the internal dc
voltage.
Internal Voltage Stabilizer
With a control voltage at Pin 14 the VCO frequency can
be switched for setting to the required L’ value (L’
standard). Also a fine adjustment of the L’-VCO center
frequency is possible via a potentiometer. The L’ switch
is only active for positive modulated video IF-signals
(standard switch in L mode).
The internal bandgap reference ensures constant performance independent of supply voltage and temperature.
4 (16)
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
TDA4470-M
Pin Description
Vi,SIF1 1
28
Vi,SIF2
Vi,SIF1 2
27
Vi,SIF2
Vsw
3
26
Rcomp
GND
4
25
Vo,AM
CAGC
5
24
Vo,FM
Vi,VIF
6
23
VS
Vi,VIF 7
22
VAFC
CAGC 8
21
VVCO
GND
9
20
VVCO
Rtop 10
19
Vsw
Itun 11
18
LF
Vo,vid 12
17
CRef
Vsw 13
16
GND
15
CBL
Vsw 14
Pin
1, 2
3
4, 9, 16
5
6, 7
8
10
11
12
13
14
15
17
18
19
20, 21
22
23
24
25
26
27, 28
Symbol
Vi, SIF1
Vsw
GND
CAGC
Vi, VIF
CAGC
Rtop
Itun
Vo,vid
VSW
VSW
Cbl
Cref
LF
Vsw
VVCO
VAFC
VS
VO, FM
VO, AM
Rcomp
Vi, SIF2
Function
SIF1 input (symmetrical)
Input selector switch
Ground
SIF-AGC (time constant)
VIF input (symmetrical)
VIF-AGC (time constant)
Take over point, tuner AGC
Tuner AGC output current
Video output
Standard switch
L’ switch
Black level capacitor
Internal reference voltage
Loop filter
AFC switch
VCO circuit
AFC output
Supply voltage
Intercarrier output
AF output – AM sound
Offset compensation
SIF 2 input (symmetrical)
94 8680
Figure 2. Pinning
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
5 (16)
Preliminary Information
TDA4470-M
Absolute Maximum Ratings
Reference point Pin 4 (9, 16), unless otherwise specified
Parameters
Supply voltage
Pin 23
SDIP28 package
SO28 package
Supply current
Pin 23
Power dissipation
SDIP28 package
SO28 package
Output currents
Pins 12, 24 and 25
External voltages
Pins 1, 2, 5 to 8, 10, 12, 14, 17, 18 and 24 to 28
Pins 15, 20 and 21
Pin 11
Pins 3, 13, 19 and 22
Junction temperature
Storage temperature
Electrostatic handling *) all pins
*)
Symbol
Value
Unit
VS
VS
Is
P
P
Iout
9.0
6.0
93
840
560
5
V
V
mA
mW
mW
mA
+4.5
+3.5
+13.5
VS
+125
–25 to +125
V
V
V
V
°C
°C
V
Symbol
Value
Unit
VS
VS
Tamb
4.5 to 9.0
4.5 to 6.0
–10 to +85
V
V
°C
Symbol
Maximum
Unit
RthJA
RthJA
55
75
K/W
K/W
Vext
Tj
Tstg
VESD
"300
Equivalent to discharging a 200 pF capacitor trough a 0 W resistor.
Operating Range
Parameters
Supply voltage range
Pin 23
SDIP28 package
SO28 package
Ambient temperature
Thermal Resistance
Parameters
Junction ambient, when soldered to PCB
SDIP28 package
SO28 package
6 (16)
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
TDA4470-M
Electrical Characteristics
VS = +5 V, Tamb = +25°C; reference point Pin 4 (9, 16), unless otherwise specified
Parameters
DC-supply
Supply voltage – SDIP28
– SO28
Supply current
VIF-input
Input sensitivity, (RMS value)
Input impedance
Input capacitance
VIF-AGC
IF gain control range
AGC capacitor
Black level capacitor
Switching voltage: VCR mode
Switching current: VCR mode
Tuner-AGC
Available tuner-AGC current
Allowable output voltage
IF slip – tuner AGC
IF input signal for minimum
take over point
IF input signal for maximum
take over point
Variation of the take over point
by temperature
FPLL and VCO
Max. oscillator frequency
Vision carrier capture range
Oscillator drift (free running) as
function of temperature
Video output
Output current
– source
– sink
Output resistance
Video output signal
Difference of the video signals
Sync. level
Zero carrier level for neg.
modulation, ultra white level
Zero carrier level for pos.
modulation, ultra black level
Supply voltage influence on the
ultra white and ultra black level
Video bandwidth (–3 dB)
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
Test Conditions / Pins
Pin 23
Symbol
Min.
Typ.
Max.
Unit
VS
VS
IS
4.5
4.5
5.0
5.0
85
9.0
5.5
93
V
V
mA
vin
Rin
Cin
Pins 8 and 15
Gv
60
Pin 8
CAGC
Pin 15
CBL
See note 2
Vsw
See note 2
Isw
Pins 10 and 11 see note 3
Itun
1
V11
0.3
Current Itun: 10 to 90%
∆GIF
Rtop = 10 kW (Vtop = 4.5 V)
vin
80
1.2
2
120
mVRMS
kW
Pin 6-7
For FPLL locked
See note 1
See note 1
Rtop = 0, (Vtop = 0.8 V)
vin
65
2.2
100
4.0
50
2
8
B
dB
mF
nF
V
mA
4
13.5
10
4
40
6
mA
V
dB
mV
mV
∆Tamb = 55°C
∆vin
2
VIF-AGC: Gv = 46 dB
Pins 18, 20, 21 and 26 see note 4
For carrier generation
fvco
70
fvco = 38.9 MHz,
∆fcap
±1.5
±2
Cvco = 8.2 pF
See note 5,
∆f/∆T
∆Τamb = 55°C,
Cvco = 8.2 pF,
fvco = 38.9 MHz
Pin 12
±I12
2
See note 1
Rout
Peak-to-peak value
vo,vid
1.8
2.0
Between B/G and L
∆vo,vid
Vsync
1.2
V13 = VS
VDC
3.4
V8 = 3 V
V13 = 0
VDC
1.15
V8 = 3 V
∆V/V
1
RL ≥ 1 kW, CL ≤ 50 pF
pF
8
3
dB
MHz
MHz
–0.3
%
5
3
100
2.2
10
mA
mA
W
Vpp
%
V
V
V
%/V
MHz
7 (16)
Preliminary Information
TDA4470-M
Parameters
Video frequency response over
the AGC range
Differential gain error
Differential phase error
Intermodulation
1.07 MHz
Video signal to noise ratio
Residual vision carrier
fundamental wave 38.9 MHz
and second harmonic 77.8 MHz
Lower limiting level
Upper limiting level
Ripple rejection
Standard switch
Control voltage for mode 1:
neg. modulated video-IF signals
and AM/NICAM sound
Control voltage for mode 2:
pos. modulated video-IF signals
and AM/L-NICAM sound
Switching current
AFC output
Control slope
Frequency drift by temperature
Output voltage
upper limit
lower limit
Output current
AFC switch
Control voltage: AFC “off”
AFC curve rising
AFC curve falling
Switching current
L’ switch
Control voltage:
L’ frequency +
L’-VCO alignment
L standard
Switching current
SIF inputs
Input sensitivity
(RMS value)
Input impedance
Input capacitance
SIF-AGC
IF gain control range
AGC capacitor
Intercarrier output-FM
DC output voltage
Test Conditions / Pins
Symbol
∆Β
Min.
Typ.
Max.
2.0
Unit
dB
5
5
52
2
2
60
%
deg
dB
DG
DP
aIM
See note 6
Weighted, CCIR-567
Below sync level
Above ultra white level
See note 1, Pin 23/Pin 12
Pin 13
See note 7
S/N
vres1
56
60
2
10
dB
mV
∆Vlim1
∆Vlim2
RR
35
VSW
2.0
VS
V
VSW
0
0.8
V
400
600
ISW
±100
∆I/∆f
0.7
0.25
mV
mV
dB
mA
Pin 22
Related to the picture
carrier frequency
VAFC
mA/kHz
0.6
%
0.4
V
V
mA
VS–0.4
±0.2
IAFC
Pin 19
VSW
See note 8
0
1.5
3.5
0.8
2.5
VS
V
V
V
mA
0
3.0
V
3.4
VS
V
mA
±100
ISW
Pin 14
VSW
See note 9
VSW = 0
Output signal
at Pin 24/25: –3 dB
See note 1
See note 1
ISW
Pin 1-2, 27-28
vin
700
Rin
Cin
1.2
2
kW
pF
65
10
dB
mF
2
V
80
120
mVRMS
Pin 5
Pin 24
Gv
60
CAGC
see note 10
VDC
8 (16)
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
TDA4470-M
Parameters
Output resistance
Sound IF output voltage
(5.5 MHz output voltage)
Weighted signal to noise ratio:
(CCIR 468)
Ripple rejection
AF output-AM
DC output voltage
Output resistance
AF output voltage
Total harmonic distortion
Signal to noise ratio
Ripple rejection
SIF input selector switch
Control voltage:
input 1 active
input 2 active
Switching current
Test Conditions / Pins
See note 1
vin = 10 mV
Ref. signal:
vin = 10 mV;
FM dev. = ±27 kHz
fmod = 1 kHz;
tested with the double
FM demod. U2860B;
B/G modulated VIF signal
Black screen: Channel 1/2
Grid pattern: Channel 1/2
Grey screen 50%: Channel
1/2
See note 1, Pin 23/Pin 24
Pin 25
See note 1
m = 54%
fmod = 1 kHz and 12.5 kHz
Reference: m = 54 %,
fmod = 1 kHz,
22 kHz low pass filter
See note 1, Pin 23/Pin 25
Pin 3
See note 12
Symbol
Rout
vout
Min.
180
S/N
S/N
S/N
RR
Typ.
150
250
Max.
Unit
350
mVRMS
60/58
54/52
60/57
dB
dB
dB
35
see note 11
VDC
Rout
voAF
THD
400
S/N
dB
2.2
150
500
1
V
W
630
2
65
RR
28
VSW
2.0
0
mVRMS
%
dB
dB
VS
0.8
±100
ISW
W
V
V
A
Notes
1.)
2.)
3.)
4.)
5.)
6.)
7.)
8.)
9.)
10.)
11.)
12.)
This parameter is given as an application information and not tested during production.
In VCR mode the VIF- and SIF path is switched off.
Adjustment of turn over point (delayed tuner AGC) with external resistor Rtop or external voltage Vtop possible.
Resonance circuit of VCO (fo = 38.9 MHz): CVCO = 8.2 – 10 pF,
Coil LVCO with unloaded Q-factor Qo 60 for an oscillator voltage 100 mVRMS at Pin 20 – 21
(e.g. TOKO coil 7 KM, 292 XNS - 4051Z)
The oscillator drift is related to the picture carrier frequency, at external temperature-compensated LC circuit.
1.07) = 20 log (4.43 MHz component/1.07 MHz component); (1.07) value related to black-white signal
input signal conditions:
picture carrier = 0 dB, colour carrier = –6 dB, sound carrier = –24 dB
Without external control at Pin 13 the IC automatically operates in mode 1:
⇒ negative modulated video-IF signals and FM/NICAM sound signals.
Without control voltage at Pin 19 falling AFC curve is automatically selected.
With open circuit at Pin 14 the L’ switch is not active.
Picture carrier PC = 38.9 MHz; sound carrier SC1 = 33.4 MHz, SC2 = 33.16 MHz;
PC/SC1 =13 dB; PC/SC2 = 20 dB; PC unmodulated (equivalent to sync. peak level).
Sound carrier SC = 32.4 MHz, modulated with fmod = 1 kHz, m = 54%; vin =10 mV
Without control voltage at Pin 3 the SIF input 1 is automatically selected.
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
w
w
9 (16)
Preliminary Information
TDA4470-M
Intercarrier
AF
(AM) (FM/NICAM)
SIF 2
AFC
AFC
switch
+VS
Loop
comp.
Black
level
22 mF
*)
LVCO 150 W
8.2 pF
10 kW
Loop
filter
CRef
CVCO
27
26
25
24
23
22
21
20
1
2
3
4
5
6
7
8
9
10
470 nF
17
16
15
12
13
14
94 9291
28
470 nF
18
19
10 mF
22 K
2.2 mF
SIF 1
*)
SIF
Input switch
11
10 kW
AGC (VIF)
AGC (SIF)
VIF
external L/C circuit (VCO 38.9 MHz)
with TOKO coil 7KM, 292 XNS – 4051Z
Tuner
delay Tuner Video
AGC
Video
neg/pos
L’
Figure 3. Test circuit
10 (16)
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
*)
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
External L/C circuit (VCO: 38.9 MHz)
with TOKO coil 7KM, 292 XNS – 4051Z
IFin
50 W
10 nF
10 nF
4
3
2
1
SAW driver
U4744B
5
6
7
8
10 nF
+12 V
Preliminary Information
SAW: VIF
BP: 33.4 MHz
SAW: FM
1
28
BP: 32.4 MHz
SAW: AM
SIF 1
SIF 2
2
27
Input switch
S3
3
26
10 kW
Offset
comp.
4
VIF
7
22
22 m F
10 nF
23
6
AFC
9
S2
10
19
12
17
CBL
14
S4
L’adjust
13
15
100 nF
16
S1
CRef
2.2 m F
94 8497
Tuner Video Standard L/L’
switch switch
10 kW
11
18
470 nF
Tuner
AGC
CVCO
Loop
filter
150W
AFC switch
2V
*)
LVCO
20
2.2m F
8.2 pF
AGC (VIF)
8
21
10 nF
51 k W 51 kW
+5 V
10m F
AGC (SIF)
5
24
2.2 k W
25
3.3 nF
Intercarrier
AF(AM) (FM/NICAM)
TDA4470-M
Figure 4. Basic application circuit
11 (16)
TDA4470-M
Internal Pin Configuration
1, 27
2, 28
2kW
2k
W
20 k
2 kW
2 kW
W
3V
2.3 V
4.2 V
94 8521
94 8524
Figure 5. Sound IF inputs (Pin 1-2, 27-28)
Figure 8. Video IF input (Pin 6-7)
3.5 V
94 8525
3
10 kW
60 kW
8
94 8522
Figure 6. Input selector switch (Pin 3)
Figure 9. VIF-AGC time constant (Pin 8)
3.5 V
5
6 kW
94 8523
Figure 7. SIF-AGC time constant (Pin 5)
6.5 kW
94 8526
Figure 10. Tuner AGC – take over point (Pin 10)
12 (16)
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
TDA4470-M
94 8527
2.7 V
5 kW
15
Figure 11. Tuner AGC – output (Pin 11)
94 8530
Figure 14. Black level capacitor (Pin 15)
2.6 mA
3.5 V
94 8528
Figure 12. Video output (Pin 12)
94 8531
Figure 15. Internal reference voltage (Pin 17)
3.5 V
15.5 kW
17 kW
13
23 kW
2.75 V
94 8529
94 8532
Figure 13. Standard switch (Pin 13)
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
Figure 16. Loop filter (Pin 18)
13 (16)
Preliminary Information
TDA4470-M
3.5 V
30 k
W
100
19
10.5 k W
W
24
1 mA
94 8533
94 8536
Figure 17. AFC switch (Pin 19)
Figure 20. Intercarrier output (Pin 24)
7 kW
7 kW
25
100 W
94 8534
1.4 mA
Figure 18. VCO (Pin 20-21)
94 8537
Figure 21. AF output AM sound (Pin 25)
3.5 V
94 8538
10 kW
10 kW
94 8535
Figure 19. AFC output (Pin 22)
Figure 22. VCO offset compensation (Pin 26)
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Preliminary Information
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
TDA4470-M
Dimensions in mm
Package: SDIP28
95 10610
Package: SO28
95 10610
95 9932
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
15 (16)
Preliminary Information
TDA4470-M
Ozone Depleting Substances Policy Statement
It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as
ozone depleting substances ( ODSs).
The Montreal Protocol ( 1987) and its London Amendments ( 1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban
on these substances.
TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of
continuous improvements to eliminate the use of ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2 . Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency ( EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C ( transitional substances ) respectively.
TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain
such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer
application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized
application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of,
directly or indirectly, any claim of personal damage, injury or death associated with such unintended or
unauthorized use.
TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423
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Preliminary Information
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96