LM1291 - Video PLL System

National Semiconductor

The LM1291 by National Semiconductor is a Video PLL System. Below is the official datasheet preview.

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LM1291 Video PLL System by National Semiconductor - Datasheet Preview — Official preview page of the **LM1291** Video PLL System datasheet (National Semiconductor).

Datasheet Details

Part number	LM1291
Manufacturer	National Semiconductor
File Size	205.40 KB
Description	Video PLL System
Datasheet	LM1291_NationalSemiconductor.pdf
Additional preview pages of the LM1291 datasheet.

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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Published: Mar 22, 2005 |