LM1291 - Video PLL System

Product Overview

National Semiconductor

Datasheet Details

Part number	LM1291
Manufacturer	National Semiconductor
File Size	205.40 KB
Description	Video PLL System
Datasheet	LM1291 Datasheet
Additional preview pages of the LM1291 datasheet.

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 |