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

● 5 V supply voltage; low power consumption

● Active carrier generation by FPLL principle

(frequency-phase-locked-loop) for true

synchronous demodulation

● Very linear video demodulation, good pulse response

and excellent intermodulation figures

● VCO circuit operates at picture carrier frequency

● Alignment-free AFC without external reference

circuit, polarity of the AFC curve is switchable

● VIF-AGC with peak sync. detection

● Tuner AGC with adjustable take over point

● Alignment-free quasi parallel sound (QPS) mixer for

FM/NICAM sound IF signals

● Intercarrier output signal is gain controlled (necessary

for digital sound processing)

● Separate SIF-AGC with average detection

● Two independent SIF inputs

● Package and relevant pinning is compatible with the

multistandard version TDA4470, which simplifies the

design of an universal IF module