TDA4471 [TEMIC]
Multistandard Video-IF and Quasi Parallel Sound Processing; 多标准视频- IF和准并行处理声音
| 型号： | TDA4471 |
| 厂家： | 
TEMIC SEMICONDUCTORS |
| 描述： | Multistandard Video-IF and Quasi Parallel Sound Processing |
| 文件： | 总16页 (文件大小：278K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TDA4471
TELEFUNKEN Semiconductors
Multistandard Video-IF and Quasi Parallel Sound Processing
Description
The TDA4471 is an integrated bipolar circuit for full (e.g. L standard) and the AM, FM/NICAM sound IF
multistandard video/sound IF (VIF/SIF) signal signals. Specially two video IF inputs (2 x VIF) in
processing in TV/VCR and Multimedia applications. The combination with one sound IF input (1 x SIF) and the
circuit processes all TV video IF signals with negative common pinning with the TDA4474 gives flexibility to
modulation (e.g. B/G standard), positive modulation design a universal IF module for various applications.
Features
D 5V supply voltage; low power consumption
D Intercarrier output signal is gain controlled
(necessary for digital sound processing)
D Active carrier generation by FPLL principle
(frequency–phase–locked–loop)
synchronous demodulation
for
true D Complete alignment–free AM demodulator with
gain controlled AF output
D Very linear video demodulation, good pulse D Separate SIF–AGC with average detection
response and excellent intermodulation figures
D Parallel operation of the AM demodulator and
D VCO circuit is operating on picture carrier
frequency, the VCO frequency is switchable for
the L’ mode
QPS mixer (for NICAM–L stereo sound)
D Two video IF inputs (2 x VIFin)
D One sound IF input (1 x SIFin)
D Alignment–free AFC without external reference
D Package and relevant pinning is compatible with
the TDA4474; simplifies the design of an
universal IF module
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)
Package:
30 pin shrink–dual–inline–plastic (SDIP30)
D Tuner AGC with adjustable take over point
D Alignment–free quasi parallel sound (QPS) mixer
for FM/NICAM sound IF signals
Rev. A1: 18.08.1995
1 (16)
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
L’ switch
Loop
filter
Offset
comp.
and VIF input switch
VCO
22
(optional)
28
20
23
16
VCO
+
phase shift
Control
0°
FPLL
90°
21
AFC
switch
10
AFC
24
VIF 2
11
AFC
VIF amp
6
14
VIF 1
7
Video
C
AGC
Video det.
8
15
AGC
(VIF)
Standard
switch
Standard
17
C
BL
Tuner
13
12
25
V
S
Tuner
AGC
Supply
19
FM det.
Take over
point
C
Re
f
26
Intercarrier
(FM / NICAM)
29
SIF amp
1
2
n.c.
30
n.c.
SIF 1
3
n.c.
27
AGC
(SIF)
AF (AM)
AM det.
5
4,9,18
C
AGC
95 9702
Figure 1. Block diagram
2 (16)
Rev. A1: 18.08.1995
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
Pin Description
Pin
1, 2
3
4
5
6, 7
8
9
10, 11
12
13
14
15
16
17
18
19
20
21
22, 23
24
25
26
27
28
29
30
Symbol
Function
SIF1 input (symmetrical)
not connected
n.c.
30
V
i,SIF1
1
2
3
4
5
6
7
8
9
V
i,SIF1
n.c.
GND
n.c.
29
V
i,SIF1
Ground
C
AGC
SIF–AGC (time constant)
VIF1 input (symmetrical)
VIF–AGC (time constant)
Ground
VIF2 input (symmetrical)
Take over point, tuner AGC
Tuner AGC output current
Video output
V
i,VIF1
R
28
27
26
n.c.
comp
C
AGC
GND
V
o,AM
GND
V
i,VIF2
R
I
top
V
o,FM
C
tun
AGC
V
o,vid
V
sw
Standard switch
V
V
V
i,VIF1
25
24
23
S
V
sw
L’–/VIF input selector switch
Capacitor – black level detector
Ground
Internal reference voltage
Loop filter
AFC switch
VCO circuit
AFC output
Supply voltage
Intercarrier output
AF output – AM sound
Offset compensation
not connected
C
bl
V
i,VIF1
AFC
GND
C
ref
V
C
LF
VCO
VCO
SW
AGC
V
sw
V
vco
V
V
22
21
GND
V
AFC
V
s
V
i,VIF2
10
11
12
V
o,FM
V
o,AM
20
19
18
17
16
LF
C
V
i,VIF2
R
comp
n.c.
n.c.
not connected
R
top
Ref
GND
13
14
I
tun
C
bl
V
o,vid
V
SW
(stand.)
V
SW
(L’)
15
95 9703
Figure 2. Pin configuration
Rev. A1: 18.08.1995
3 (16)
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
Circuit Description
frequency the AFC output current is equal to zero. Fur-
thermore, at Pin 16, the VCO centre frequency can be
switched for setting to the required L’ value This function
is active when ”L mode” is selected by the standard
switch.
Vision IF amplifier
The video IF signal (VIF) is fed through a SAW filter to
one of the two VIF inputs (Pins 6–7 or 10–11). The
selection of VIF input is controlled by Pin 16 in combina-
tion with the standard switch. With a minimal external
expense it is possible to switch between two different
SAW filters. Both VIF inputs features excellent
cross–talk attenuation and an input impedance which is
independent from the switching condition. The VIF
amplifier consists of three AC–coupled amplifier stages.
Each differential amplifier is gain controlled by the
automatic gain control (VIF–AGC). Output signal of the
VIF amplifier is applied to the FPLL carrier generation
and the video demodulator.
The optional potentiometer at Pin 28 allows an offset
compensation of the VCO phase for improved sound
quality (fine adjustment). Without a potentiometer (open
circuit at Pin 28) this offset compensation is not active.
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 (–3dB). 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 6dB
gain offers easy adaption of the sound trap. For nominal
video IF modulation the video output signal at Pin 14 is
2 V (peak to peak value).
Tuner– and VIF–AGC
At Pin 8 the VIF–AGC charges/discharges the AGC
capacitor to generate a control voltage for setting gain of
VIF amplifier and tuner in order to keep the video output
signal at a constant level. Therefore in case of 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 mod-
ulation (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 very large
time constant is needed, an additional black level detector
(Pin 17) controls the discharge current in the event of
decreasing VIF input signal. The AGC voltage is
transferred to an internal control signal, and is fed to the
tuner AGC to generate the tuner AGC current at Pin 13
(open collector output).
Sound IF amplifier and SIF–AGC
The SIF amplifier is nearly identical with the 3–stage VIF
amplifier. Each differential amplifier is gain controlled
by the automatic gain control for the sound IF path (SIF–
AGC). Output signal of the SIF amplifier is applied to the
mixer for FM/NICAM signals and the limiter/
demodulator for AM signals.
Take over point of the tuner AGC can be adjusted at
Pin 12 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 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 24. With the AFC
switch (Pin 21) three operating conditions of the AFC are
possible: AFC curve ”rising” or ”falling” and AFC ”off”.
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 syn-
chronous 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
A practicable VCO alignment of the external coil is the
adjustment to zero AFC output current at Pin 24. At centre
4 (16)
Rev. A1: 18.08.1995
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
modulation (e.g. B/G standard) the AF output signal
(Pin 27) is switched off by the standard switch.
L’ switch and VIF input selection
For positive modulated IF signals (L/L’ standard) Pin 16
works as L’ switch. With a control voltage at Pin 16 the
VCO frequency can be switched for setting to the required
L’ value (L’ standard). Also a fine adjustment of the L’–
VCO centre frequency is possible by a potentiometer. The
L’ switch is only active for positive modulated video IF
signals (standard switch in L mode). In this mode the
video IF input 2 (VIF2) is forced by the standard switch.
The possibility to select VIF1 input is given by connect-
ing VIF2 input (pin 10 or 11) via 10 k resistor to ground.
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 26.
Standard switch
To have equal polarity of the video output signal the po-
larity can be switched in the demodulation stage in
accordance with the TV standard. Additional a standard
dependent DC level shift in the video amplifier delievers
the same sync level. Parallel the correct VIF–AGC is se-
If negative modulation (B/G mode) is selected pin 16 op-
erates as an input selection switch for the two VIF inputs.
AFC switch
lected for positive or negative modulated VIF signals. In The AFC output signal at Pin 24 can be controlled by a
case of negative modulation (e.g. B/G standard) the AM switching voltage at Pin 21. It is possible to select an AFC
output signal is switched off. If the standard for positive output signal with rising– or falling AFC curve and to
modulation (L standard) is selected the AM demodulator switch off the AFC.
and QPS mixer is active. This condition allows a parallel
operation of the AM sound signal and the NICAM–L ste-
Internal voltage stabilizer
reo sound.
The internal bandgap reference ensures constant perfor-
mance independant of supply voltage and temperature.
Absolute maximum values
Reference point pin 4 (9, 18), unless otherwise specified
Parameters
Symbol
Value
9.0
85
765
5
+ 4.5
Unit
V
mA
mW
mA
V
Supply voltage
Supply current
Pin 25
Pin 25
V
S
I
S
Power dissipation, V = + 9 V
P
I
out
s
Output currents
External voltages
Pin 14, 26, 27
Pins 1, 2, 5–8, 10–12,
14, 16, 19, 20, 26–28
V
ext
Pins 17, 22, 23
Pins 13
+ 3.5
+ 13.5
V
V
Pins 15, 21, 24
V
s
V
Junction temperature
Storage temperature
Electrostatic handling *)
T
+125
–25 to +125
300
°C
°C
V
j
T
stg
All pins
V
ESD
*) Equivalent to discharging a 200 pF capacitor through a 0 resistor
Operating Range
Parameters
Symbol
Value
Unit
V
°C
Supply voltage range25
Ambient temperature
V
S
4.5 to 9.0
0 to +85
T
amb
Rev. A1: 18.08.1995
5 (16)
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
Thermal Resistance
Parameters
Symbol
Value
55
Unit
K/W
Thermal resistance:
R
thJA
junction–ambient when soldered to PCB
Electrical Characteristics
Vs = +5V, Tamb = +25°C; reference point Pin 4 (9, 18), unless otherwise specified
Parameters
Test Conditions / Pins
Symbol
Min.
Typ.
Max.
Unit
DC–supply
Pin 25
Supply voltage
Supply current:
VIF–inputs
V
4.5
5.0
75
9.0
85
V
mA
S
I
S
Pin 6–7, 10–11
Input sensitivity, RMS
value
for FPLL locked
v
in
80
120
µV
Input impedance
Input capacitance
VIF–AGC
see note 1
see note 1
R
C
1.2
2
k
pF
in
in
Pin 8, 17
IF gain control range
AGC capacitor at pin 8
Black level capacitor at pin
17
G
60
65
2.2
100
dB
µF
nF
v
C
AGC
C
BL
Tuner–AGC
Pin 12, 13 see note 2
Available tuner–AGC cur-
rent
Allowable output voltage
IF slip – tuner AGC
I
1
2
8
4
mA
tun
V
0.3
13.5
10
V
dB
out
current I
10% to 90%
:
GIF
tun
IF input signal for mini-
mum
take over point
IF input signal for maxi-
mum
take over point
Variation of the take over
point
by temperature
FPLL and VCO
Max. oscillator frequency
Vision carrier capture range
R
= 10 k
top
v
4
3
mV
mV
dB
top
in
(V = 4.5 V)
R
top
= 0
v
in
40
(V
0.8 V)
top =
2
2
Tamb = 55°C
VIF–AGC: Gv = 46 dB
vin
Pin 20, 22, 23, 28
for carrier generation
= 38.9 MHz
f
70
MHz
MHz
vco
f
fcap
1.5
vco
C
vco
= 6.8 pF
Oscillator drift (free run-
ing) as function of temper-
ature
see note 3
–0.3
%
f/T
T
amb
= 55°C,
C
vco
= 6.8 pF,
f
= 38.9 MHz
vco
6 (16)
Rev. A1: 18.08.1995
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
Electrical Characteristics
Vs = +5V, Tamb = +25°C; reference point Pin 4 (9, 16), unless otherwise specified
Parameters
Video output
Test Conditions / Pins
Pin 14
Symbol
Min.
Typ.
Max.
Unit
Output current – source
– sink
5
3
mA
mA
Iout
2
Output resistance
Video output signal
Difference of the video
signals
see note 1
peak to peak value
between B/G and L
R
100
2.2
10
out
v
o,vid
1.8
2.0
V
%
vo,vid
Sync level
Zero carrier level for neg.
modolation
V
V
1.2
3.4
V
V
sync
V = 3 V
8
DC
(Ultra white level)
Zero carrier level for pos.
modulation
(Ultra black level)
Supply voltage influence
on the ultra black– and
ultra white level
V = 3 V
8
V
1.15
1
V
DC
%/V
V/V
Video bandwidth (–3dB)
Video frequency response
over the AGC range
R
L
1 k, C 50 pF
B
B
6
8
MHz
dB
L
2.0
Differential gain error
DG
DP
2
2
60
60
2
5
5
%
deg
dB
Differential phase error
Intermodulation 1.07MHz
Video signal to noise ratio
Residual vision carrier
fundamental wave
see note 4
52
56
IM
weighted , CCIR–567
S/
N
dB
mV
v
res1
10
38.9 MHz and second
harmonic 77.8 MHz
Lower limiting level
Upper limiting level
Ripple rejection
below sync level
400
600
mV
mV
dB
Vlim1
Vlim2
RR
above ultra white level
Pins 25, 14
35
see note 1
Rev. A1: 18.08.1995
7 (16)
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
Electrical Characteristics
Vs = +5V, Tamb = +25°C; reference point Pin 4 (9 ,16), unless otherwise specified
Parameters
Test Conditions / Pins
Pin 15
Symbol
Min.
Typ.
Max.
Unit
V
Standard switch
Control voltage for mode 1: see note 5
neg. modulated video–IF
signals
note 2
V
SW1
V
SW2
I
SW
2.0
V
s
and FM/NICAM sound
Control voltage for mode 2:
pos. modulated video–IF
signals
0
0.8
V
and AM / L–NICAM sound
Switching current
AFC output
Control slope
100
0.7
A
Pin 24
I/f
A/kHz
Frequency drift by
temperature
Output voltage upper limit
lower limit
related to the picture carrier
frequency
0.25
0.6
0.4
%
V
V
V
AFC
V –0.4
s
Output current
I
mA
0.2
AFC
AFC switch
Pin 21
Control voltage: AFC ”off”
AFC curve rising
AFC curve falling
Switching current
V
0
1.5
3.5
0.8
2.5
SW
V
A
see note 6
V
s
I
100
SW
L’/VIF input selector switch
Control voltage:
Pin 16 see note 7
standard switch in mode 2
L’-VCO frequency
L’-VCO frequency
(L standard)
V
SW2
0
3.4
3.0
4.5
V
Control voltage:
VIF input 2 active
VIF input 1 active
standard switch in mode 1
(B/G standard)
V
I
0
3.4
3.0
4.5
700
V
A
SW1
Switching current
V
SW
= 0
SW
8 (16)
Rev. A1: 18.08.1995
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
Electrical Characteristics
Vs = +5V, Tamb = +25°C; reference point Pin 4 (9, 18), unless otherwise specified
Parameters
SIF input
Input sensitivity, RMS
value
Test Conditions / Pins
Pin 1–2
output signal: –3dB
Symbol
Min.
Typ.
Max.
120
Unit
V
v
in
80
Input impedance
Input capacitance
see note 1
see note 1
R
C
1.2
2
k
pF
in
in
SIF – AGC: (pin 5)
IF gain control range
AGC capacitor
G
60
65
10
dB
F
v
C
AGC
Intercarrier output– FM
DC output voltage
Output resistance
Sound IF output voltage,
RMS value
Pin 26 see note 8
V
R
2
150
300
V
DC
out
out
see note 1
5.5 MHz output voltage
v
mV
v = 10 mV
in
Weighted signal to noise ra- Ref .signal:
tio:
v =10 mV;
in
(CCIR 468)
FM dev. = 27 kHz
f
= 1 kHz;
mod
tested with the double FM
demod. U2860B;
B/G modulated IF signal
S/N
S/N
S/N
60/58
54/52
60/57
dB
dB
dB
Black screen: Channel 1/2
Grid pattern: Channel 1/2
Grey screen 50%:
Channel 1/2
Ripple rejection
Pins 25, 26
see note 1
RR
35
dB
Electrical Characteristics
Vs = +5V, Tamb = +25°C; reference point Pin 4 (9 ,16), unless otherwise specified
Parameters
AF output – AM
DC output voltage
Output resistance
AF output voltage, RMS
value
Test Conditions / Pins
Symbol
Min.
Typ.
Max.
Unit
V
Pin 27 see note 9
V
R
2.2
150
500
DC
see note 1
m = 54 %
out
v
oAF
mV
%
Total harmonic distortion
m = 54%
THD
S/N
1
2
f
= 1kHz, 12.5kHz
mod
Signal to noise ratio
Reference: m = 54%,
= 1 kHz,
65
dB
f
mod
22 kHz low pass filter
Ripple rejection
Pin 25, 27
RR
28
dB
see note 1
Rev. A1: 18.08.1995
9 (16)
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
Notes:
1.
2.
3.
This parameter is given as an application information and not tested during production.
Adjustment of turn over point (delayed tuner AGC) with external resistor Rtop or external voltage Vtop
.
The oscillator drift is related to picture carrier frequency, at external temperature-compensated LC
circuit
4.
(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
sound carrier
–6 dB
–24 dB
5.
Without external control voltage at Pin 15 (open circuit) the IC automatically operates in mode :
negative modulated video IF and FM/NICAM sound signals
Voltage at Pin 15
(standard switch)
0 – 0.8 V
2.0V – Vs
(or Pin 15 open)
Selected standard
(mode)
mode 2 (L standard)
VIF: pos. modulation
SIF: AM + NICAM
mode 1 (B/G standard)
VIF: neg. modulation
SIF: FM/ NICAM
6.
7.
Without control voltage at Pin 21 (open circuit) the falling AFC curve is automatically selected
Voltage at Pin 21
(AFC switch)
0 – 0.8 V
1.5 – 2.5 V
3.5 V – Vs
(or Pin 21 open)
AFC function
AFC switched OFF
AFC curve rising
AFC curve falling
Without control voltage at Pin 16 (open circuit) the L’ switch is not active.
St Package
(Dimensions in mm) stan-
dard switch, Pin 15
Mode 1: neg. modulation (B/G)
2.0 V – V
Mode 2: pos. modulation (L)
0 – 0.8 V
S
3.4 V – 4.5 V
(or Pin 16 open)
L’/VIF input switch, Pin 16
0 – 3.1 V
3.4 V – 4.5 V
(or Pin 16 open)
0 – 3.1 V
Ext. voltage at VIF input 2,
Pin 10 or 11
open
1 V
open
1 V
open
1 V
open
1 V
Modulation
Standard
Active VIF input
neg.
B/G,...
VIF1
neg.
B/G,...
VIF1
neg.
B/G,...
VIF2
*)
*)
*)
neg.
L
VIF2
neg.
L
VIF1
neg.
L’
VIF2
neg.
L’
VIF1
*) condition not useful
8.
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)
9.
Sound carrier SC = 32.4 MHz, modulated with fmod = 1 kHz, m = 54 %; vin = 10 mV
10 (16)
Rev. A1: 18.08.1995
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
Intercarrier
(FM/NICAM) AFC
AF
(AM)
AFC
switch
+VS
Loop
comp.
Loop
filter
L’ and
Black
level
VIF input
switch
LVCO
150 W
6.8 pF
CRef
10 kW
CVCO
n.c.
30
n.c.
29
470 nF
2.2 mF
470 nF
18
17
16
15
28
27
26
25
24
23
22
21
20
11
19
TDA4471
1
2
10
12
13
14
3
4
5
6
7
8
9
n.c.
10 kW
10 mF
AGC (SIF)
2.2 mF
AGC (VIF)
Standard switch
(neg/pos)
Tuner
delay
SIF 1
Tuner Video
AGC
VIF 1
VIF 2
*) External L/C circuit (VCO: 38.9 MHz) with TOKO coil 7KN (9 turns, 0.12mm)
Figure 3. Test circuit
Rev. A1: 18.08.1995
11 (16)
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
95 9839
Figure 4. Basic application circuit
12 (16)
Rev. A1: 18.08.1995
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
Internal Pin Configuration
94 8525
1
2
8
2 kW
2 kW
3 V
20 kW
95 9835
Figure 8. VIF–AGC time constant (Pin 8)
Figure 5. Sound IF inputs (Pin1–2)
+ 3.5 V
7 kW
12
900 W
14 kW
7 kW
5
95 9832
94 8523
Figure 9. Tuner AGC – take over point (Pin 12)
Figure 6. SIF–AGC time constant (Pin 5)
95 9817
6
7
13
2 kW
2 kW
4.2 V
2.3 V
Figure 10. Tuner AGC – output (Pin 13)
95 9831
Figure 7. Video IF input (Pin 6–7)
Rev. A1: 18.08.1995
13 (16)
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
19
14
3.5 V
2.6 mA
95 9822
95 9818
Figure 15. Internal reference voltage (Pin 19)
Figure 11. Video output (Pin 14)
3.5 V
20
17 kW
15.5 kW
15
23 kW
2.75 V
95 9823
95 9819
Figure 16. Loop filter (Pin 20)
3.5 V
Figure 12. Standard switch (Pin 15)
3.5 V
5 kW
30 kW
16
3.2 V
21
500 W
10.5 kW
95 9824
Figure 17. AFC switch (Pin 21)
95
9820
Figure 13. L’/VIF input switch (Pin 16)
7 kW
7 kW
22
2.7 V
23
5 kW
95 9825
Figure 18. VCO (Pin 22–23)
17
95 9821
Figure 14. Black level capacitor (Pin 17)
14 (16)
Rev. A1: 18.08.1995
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
100 W
24
27
1.4 mA
95 9828
95 9826
Figure 21. AF–AM output (Pin 27)
Figure 19. AFC output (Pin 24)
95 9829
3.5 V
10 kW
10 kW
28
100 W
26
Figure 22. VCO offset compensation (Pin 28)
1 mA
95 9827
Figure 20. Intercarrier output (Pin 26)
Dimensions in mm
Package: SDIP30
94 9183
Rev. A1: 18.08.1995
15 (16)
Preliminary Information
TDA4471
TELEFUNKEN Semiconductors
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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Rev. A1: 18.08.1995
Preliminary Information
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