TDA4557 Overview
The TDA4557 is a monolithic integrated multistandard colour decoder for the PAL, SECAM, NTSC 3.58 MHz and NTSC 4.43 MHz standards.
TDA4557 Key Features
- Gain controlled chrominance amplifier for PAL, SECAM and NTSC
- ACC rectifier circuits (PAL/NTSC, SECAM)
- Burst blanking (PAL) in front of 64 µs glass delay line
- Chrominance output stage for driving the 64 µs glass delay line (PAL, SECAM)
- Limiter stages for direct and delayed SECAM signal
- SECAM permutator Demodulator part
- Flyback blanking incorporated in the demodulators (PAL, NTSC, SECAM)
- PAL switch
- V1(p-p) V3(p-p)
- 1.05 V ± 2 dB 1.33 V ± 2 dB