TDA4471
Description
The TDA4471 is an integrated bipolar circuit for full multistandard 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.
Key Features
- 5V supply voltage; low power consumption
- Active carrier generation by FPLL principle
- Intercarrier output signal is gain controlled (necessary for digital sound processing)
- Complete alignment-free AM demodulator with (frequency-phase-locked-loop) synchronous demodulation for true gain controlled AF output
- Separate SIF-AGC with average detection
- Parallel operation of the AM demodulator and
- Very linear video demodulation, good pulse response and excellent intermodulation figures
- VCO circuit is operating on picture carrier QPS mixer (for NICAM-L stereo sound)
- Two video IF inputs (2 x VIFin)
- One sound IF input (1 x SIFin)
