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TDA4472-M

Video-IF and Quasi Parallel Sound 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 all 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

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

Very linear video demodulation, good pulse response

and excellent intermodulation figures

D

VCO circuit operates at picture carrier frequency

D

Alignment-free AFC without external reference

circuit, polarity of the AFC curve is switchable

D

Separate SIF-AGC with average detection

D

Two independent SIF inputs

D

Package and relevant pinning is compatible with the

multistandard version TDA4470, which simplifies the

design of an universal IF module

D

VIF-AGC with peak sync. detection

D

Tuner AGC with adjustable take over point

Package:

SDIP28, SO28

Ordering Information

Extended Type Number

TDA4472-MSD

TDA4472-MFLG3

Package

SDIP28

SO28

Remarks

Delivery in taped form

TELEFUNKEN Semiconductors

Rev. A2, 15-Oct-96

1 (14)

Preliminary Information

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