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TDA4472-A Datasheet

  • TDA4472-A

  • Video-IF (VIF) with FPLL Demodulation and Quasi Parallel Sou...

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TELEFUNKEN Semiconductors
TDA4472-A
Video-IF (VIF) with FPLL Demodulation and Quasi Parallel
Sound (QPS) Processing
Description
The TDA4472 is an integrated bipolar circuit for
video/sound IF (VIF/SIF) signal processing in TV/VCR
and multimedia applications.
The circuit processes TV video IF signals with negative
modulation (e.g. B/G standard) and the 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 is operating on picture carrier frequency
D
Alignment-free AFC without external reference
circuit
D
VIF-AGC with peak sync detection
D
Tuner AGC with adjustable take over point
D
Alignment-free quasi parallel sound (QPS) mixer for
FM/NICAM sound IF signals
D
Gain controlled intercarrier output signal
(supports digital sound processing systems)
D
Separate SIF-AGC with average detection
D
Two independent SIF inputs
D
Package and pinning is fully compatible with the
multistandard version TDA4470, simplifies the
design of an universal IF module
Package
28 pin shrink-dual-inline-plastic (SDIP28)
Rev. A1: 26.07.1995
1 (14)

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