LM1290 Datasheet (National Semiconductor) - Autosync Horizontal Deflection Processor

LM1290, Autosync Horizontal Deflection Processor

The LM1290 is a high-performance, low-cost deflection solution for autosync monitors.

The LM1290 provides full autosync capability, DC controls and complete freedom from manufacturing trims.

Its continuous capture range is from 22 kHz to 110 kHz (1:5).

Mode change frequency ramping, for protection o

LM1290 Features

* n Full autosync

* 22 kHz to 110 kHz with no component switching or external adjustments n No manufacturing trims needed

* internal VCO capacitor trimmed on chip n Sample-and-hold circuit for fast top-of-screen phase recovery, even when using composite sync n DC-controlled H phase and