TDA2579C

INTEGRATED CIRCUITS DATA SHEET TDA2579C Synchronization circuit with synchronized vertical divider system for 60 Hz Preliminary specification File under Integrated Circuits, IC02 January 1994 Philips Semiconductors Philips Semiconductors Preliminary specification Synchronization circuit with synchronized vertical divider system for 60 Hz FEATURES Synchronization and horizontal part Horizontal sync separator and noise inverter Horizontal oscillator Horizontal output stage Horizontal phase detector (sync to oscillator) Triple current source in the phase detector with automatic selection Normal phase detector time constant is increased to fast during the vertical blanking period (external switching for VTR conditions not necessary) Slow phase detector time constant and gated sync pulse operation are automatically switched on by an internal sync pulse noise level detection circuit Fast phase detector time is switched on for locking Time constant externally switchable Inhibit of horizontal phase detector and video transmitter identification circuit during equalizing pulses and vertical sync pulse Inhibit of horizontal phase detector during separated vertical sync pulse Second phase detector for storage compensation of the line output stage 3-level sandcastle pulse generator Automatic adaption of the burst key pulse width Video transmitter identification circuit Stabilizer and supply circuit for starting the horizontal oscillator and output stage...