Data Sheet

NTE1632
Integrated Circuit
Vertical/Horizontal Sync Separator

Description:
The NTE1632 separates the horizontal and vertical sync pulses from the composite TV video signal
and uses them to synchronize vertical and horizontal oscillators. The NTE1632 is supplied in a
18-Lead DIP type package.

Features:
Horizontal sync separator & noise inverter
Horizontal oscillator
Horizontal phase detector (sync to oscillator)
Horizontal output stage
Inhibit of horizontal phase detector & video transmitter identification circuit during vertical oscillator
flyback
Stabilizer & supply circuit for staring the horizontal oscillator & output stage directly from the
mains rectifier
Duty factor of horizontal output pulse is 50% when flyback pulse is absent
Vertical sync separator
Vertical comparator with internal 3% precorrection circuit for vertical oscillator/sawtooth
generator
Vertical driver stage
Vertical blanking pulse generator with external adjustment of pulse duration (50Hz: 21 lines:
60Hz: 17 lines)
Vertical guard circuit
Bandgap 6.5V reference voltage for vertical oscillator & comparator
Synchronized vertical oscillator/sawtooth generator (synchronization inhibited when no video
transmitter is detected)
Time constant switch for phase detector (fast time constant during catching)
Slow time constant for noise only conditions
Time constant externally switchable (e.g. fast for VCR)
Second phase detector for storage compensation of horizontal deflection stage
Sandcastle pulse generator (3 levels)
Video transmitter identification circuit
Internal circuit for 3% parabolic precorrection of the oscillator/sawtooth generator. Comparator
supplied with precorrected sawtooth & external feedback input

Replaces:
ECG1632

Additional Model #'s
76-NTE1632
NTE1632

UPC: 768249063216