LM390N National Semiconductor, LM390N Datasheet

LM390N

Manufacturer Part Number

LM390N

Description

LM390 1W Battery Operated Audio Power Amplifier

Manufacturer

National Semiconductor

Datasheet

1.LM390N.pdf (6 pages)

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C 1995 National Semiconductor Corporation

LM390 1W Battery Operated Audio Power Amplifier

General Description

The LM390 Power Audio Amplifier is optimized for 6V 7 5V

9V operation into low impedance loads The gain is internal-

ly set at 20 to keep the external part count low but the

addition of an external resistor and capacitor between pins

2 and 6 wil increase the gain to any value up to 200 The

inputs are ground referenced while the output is automati-

cally biased to one half the supply voltage

Features

Equivalent Schematic and Connection Diagrams

Battery operation

1W output power

Minimum external parts

Excellent supply rejection

Ground referenced input

TL H 7848

Applications

Self-centering output quiescent voltage

Variable voltage gain

Low distortion

Fourteen pin dual-in-line package

AM-FM radio amplifiers

Portable tape player amplifiers

Intercoms

TV sound systems

Lamp drivers

Line drivers

Ultrasonic drivers

Small servo drivers

Power converters

TL H 7848 – 1

See NS Package Number N14A

Order Number LM390N

Dual-In-Line Package

RRD-B30M115 Printed in U S A

April 1995

TL H 7848 – 2

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