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TDA4472-A

Video-IF (VIF) with FPLL Demodulation and Quasi Parallel Sound (QPS) Processing

Temic Semiconductors 

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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