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LM2889 TV Video Modulator

December 1994

LM2889 TV Video Modulator

General Description

The LM2889 is designed to interface audio and video sig-

nals to the antenna terminals of a TV receiver It consists of

a sound subcarrier oscillator and FM modulator video

clamp and RF oscillators and modulators for two low-VHF

channels

The LM2889 allows video information from VTRs video disk

systems games test equipment or similar sources to be

displayed on black and white or color TV receivers

Features

Y

Y

Y

Y

Y

Y

Y

Y

Pin for pin compatible with LM1889 RF section

Low distortion FM sound modulator (less than 1%

THD)

Video clamp for AC-coupled video

Low sound oscillator harmonic levels

10V to 16V supply operation

DC channel switching

Excellent oscillator stability

Low intermodulation products

Block and Connection Diagrams

(Dual-In-Line Package)

Order Number LM2889N

See NS Package Number N14A

DC Test Circuit

TL H 5079 鈥?1

C

1995 National Semiconductor Corporation

TL H 5079

RRD-B30M115 Printed in U S A

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