TDA8303A

INTEGRATED CIRCUITS DATA SHEET TDA8303 TDA8303A Small signal combination IC for black/white TV Preliminary specification File under Integrated Circuits, IC02 July 1992 Philips Semiconductors Preliminary specification Small signal combination IC for black/white TV FEATURES Video IF amplifier with synchronous demodulator Automatic gain control (AGC) detector suitable for negative modulation AGC tuner Automatic frequency control (AFC) circuit with sample-and-hold Video preamplifier Sound IF amplifier and demodulator DC volume control or separate supply for starting the horizontal oscillator Audio preamplifier Horizontal synchronization circuit with two control loops Vertical synchronization (divider system) and sawtooth generation with automatic amplitude adjustment for 50 and 60 Hz Transmitter identification (mute) GENERAL DESCRIPTION The TDA8303/TDA8303A combines all small signal functions (except the tuner) which are required for a monochrome television receiver. For a complete black and white receiver only the output stages for video, sound, horizontal and vertical deflection and a tuner have to be added. The TDA8303 is for applications with npn tuners and the TDA8303A for pnp tuners. FUNCTIONAL DESCRIPTION Video IF amplifier, demodulator and video amplifier Each of the three AC-coupled IF stages permits the omission of DC feedback and possesses a control range in excess of 20 dB. An additional advantage is the symmetry of the amplifier which results i...