NXP Semiconductors TDA2579C
The TDA2579C is an integrated circuit generating all requirements for synchronization of its horizontal oscillator and output stage plus those of the vertical part which comprises a divider system, sawtooth generator, comparator and output stage. The TDA2579C is almost identical to the TDA2579B. It is optimized for the M (60 Hz) TV system.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...