LM1291 Datasheet (National Semiconductor)

LM1291, Video PLL System

The LM1291 is an integrated horizontal time base solution specifically designed to operate in continuous-sync video monitors It automatically synchronizes to any H frequency from 22 kHz to 125 kHz and provides the drive pulse to the high power deflection circuit Available sync processing includes a

LM1291 Features

* Y Y Y Y Y Y Y Y Y Y Y Y Y Y Wide continuous autosync range 22 kHz to 125 kHz (1 5 7) with no component switching or external adjustments No manufacturing trims required internal VCO capacitor trimmed on chip No costly high-precision components needed Low phase jitter (1 3 ns at 100 kHz) DC co