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, the
VCO frequency is switchable for L’-mode
• Alignment-free AFC without external reference
circuit, polarity of the AFC curve is switchable
• VIF-AGC for negative modulated signals (peak sync.
detection) and for positive modulation (peak white/
black level detector)
• 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)
• Complete alignment-free AM demodulator with gain
controlled AF output
• Separate SIF-AGC with average detection
• Two independent SIF inputs
• Parallel operation of the AM demodulator and QPS
mixer (for NICAM-L stereo sound)
• Package and relevant pinning is compatible with the
single standard version TDA4472, which simplifies
the design of an universal IF module

Datasheet: TDA4470

Package SDIP28 Multistandard Video - IF + Quasi Parallel Sound Processing