LM832

更新时间： 2024-09-24 22:47:03

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
11页	229K
描述
LM832 Dynamic Noise Reduction System DNR

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LM832 数据手册

August 1989

LM832 Dynamic Noise Reduction System DNR

General Description

Features

Low voltage battery operation

The LM832 is a stereo noise reduction circuit for use with

audio playback systems. The DNR system is noncomple-

mentary, meaning it does not require encoded source mate-

rial. The system is compatible with virtually all prerecorded

tapes and FM broadcasts. Psychoacoustic masking, and an

adaptive bandwidth scheme allow the DNR to achieve 10

dB of noise reduction. DNR can save circuit board space

and cost because of the few additional components re-

quired.

Non-complementary noise reduction, ‘‘single ended’’

Low cost external components, no critical matching

Compatible with all prerecorded tapes and FM

10 dB effective tape noise reduction CCIR/ARM

weighted

Wide supply range, 1.5V to 9V

150 mVrms input overload

No royalty requirements

The LM832 is optimized for low voltage operation with input

levels around 30 mVrms.

Cascade connection for 17 dB noise reduction

For higher input levels use the LM1894.

Applications

Headphone stereo

Microcassette players

DNRÉ is a registered trademark of National Semiconductor Corporation.

The DNRÉ system is licensed to National Semiconductor Corp. under U.S. patent 3,678,416

Radio cassette players

and 3,753,159.

A trademark and licensing agreement is required for the use of this product.

Automotive radio/tape players

Order Number LM832M See NS Package M14A

Order Number LM832N See NS Package N14A

Application Circuit

TL/H/5176–1

FIGURE 1. Component Hook-up for Stereo DNR System

1995 National Semiconductor Corporation

TL/H/5176

RRD-B30M115/Printed in U. S. A.

12 3 4 5 6 7...11

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