NXP Semiconductors TDA8303
The TDA8303 is for applications with npn tuners and the TDA8303A for pnp tuners.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. FUNCTIONALDESCRIPTION
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.