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PDF TDA4470-MSD Data sheet ( Hoja de datos )
| Número de pieza | TDA4470-MSD | |
| Descripción | Multistandard Video-IF and Quasi Parallel Sound Processing | |
| Fabricantes | TEMIC Semiconductors | |
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TDA4470-M
Multistandard Video-IF and Quasi Parallel Sound Processing
Description
The TDA4470 is an integrated bipolar circuit for multi-
standard 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
(frequency-phase-locked-loop) for true
synchronous demodulation
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 Tuner AGC with adjustable take over point
D Alignment-free quasi parallel sound (QPS) mixer for
FM/NICAM sound IF signals
D Intercarrier output signal is gain controlled (necessary
for digital sound processing)
D Complete alignment-free AM demodulator with gain
controlled AF output
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
Package: SDIP28, SO28
Ordering Information
Extended Type Number
TDA4470-MSD
TDA4470-MFLG3
Package
SDIP28
SO28
Remarks
Delivery in taped form
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
Preliminary Information
1 (16)
1 page  
Pin Description
Vi,SIF1 1
Vi,SIF1 2
28 Vi,SIF2
27 Vi,SIF2
Vsw 3
26 Rcomp
GND 4
CAGC 5
Vi,VIF 6
Vi,VIF 7
CAGC 8
25 Vo,AM
24 Vo,FM
23 VS
22 VAFC
21 VVCO
GND 9
20 VVCO
Rtop 10
Itun 11
19 Vsw
18 LF
Vo,vid 12
17 CRef
Vsw 13
16 GND
Vsw 14
15 CBL
94 8680
Figure 2. Pinning
TDA4470-M
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)
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
Preliminary Information
5 (16)
5 Page 
TDA4470-M
*) External L/C circuit (VCO: 38.9 MHz)
with TOKO coil 7KM, 292 XNS – 4051Z
Figure 4. Basic application circuit
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
Preliminary Information
11 (16)
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet TDA4470-MSD.PDF ] | |
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