LM1868 Datasheet

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LM1868 AM FM Radio System

February 1995

LM1868 AM FM Radio System

General Description

The combination of the LM1868 and an FM tuner will pro-

vide all the necessary functions for a 0 5 watt AM FM radio

Included in the LM 1868 are the audio power amplifier FM

IF and detector and the AM converter IF and detector

The device is suitable for both line operated and 9V battery

applications

Features

Y

Y

Y

Y

Y

DC selection of AM FM mode

Regulated supply

Audio amplifier bandwidth decreased in AM mode

reducing amplifier noise in the AM band

AM converter AGC for excellent overload

characteristics

Low current internal AM detector for low tweet radiation

Block Diagram

TL H 7909 鈥?1

Order Number LM1868N

See NS Package Number N20A

Note

See table for coil data

C

1995 National Semiconductor Corporation

TL H 7909

RRD-B30M115 Printed in U S A

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