View tda8822 datasheet:

INTEGRATED CIRCUITS DATA SHEET TDA8822 Universal I2C-bus programmable RF modulator 1997 Jan 08 Preliminary specification File under Integrated Circuits, IC02 Philips Semiconductors Preliminary specification Universal I2C-bus programmable RF TDA8822 modulator FEATURES • 5 V power supply • Video amplifier with clamp and white clip circuits • Programmable video modulation depth • FM sound modulator (4.5, 5.5, 6.0 and 6.5 MHz) • Programmable picture-to-sound ratio GENERAL DESCRIPTION • Programmable deviation of the sound subcarrier The TDA8822 is a programmable modulator which • Input for modulated NICAM sound subcarrier or second generates an RF TV channel from a baseband video frequency modulated sound subcarrier signal and a baseband audio signal in the event of •