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
● 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 is operating on picture carrier frequency
● Alignment-free AFC without external reference circuit
● 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
● Gain controlled intercarrier output signal
   (supports digital sound processing systems)
● Separate SIF-AGC with average detection
● Two independent SIF inputs
● Package and pinning is fully compatible with the
   multistandard version TDA4470, simplifies the
   design of an universal IF module