LM1291 - Video PLL System

National Semiconductor

LM1291 Datasheet Preview — Preview of LM1291 PDF

Datasheet Details

Part number	LM1291
Manufacturer	National Semiconductor ↗
File Size	205.40 KB
Description	Video PLL System
Datasheet	LM1291_NationalSemiconductor.pdf

LM1291 Product details

Description

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 vertical sync separator and a composite video sync stripper An internal sync selection scheme gives highest priority to separate H and V sync then composite sync and finally sync on video no external

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 controlled H phase and duty cycle Video mute pulse for blanking during H frequency transitions Input sync prioritization Clamp pulse position and width control Continuous clamp pulse output even with no.

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Other Datasheets by National Semiconductor

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Published: Mar 22, 2005 |