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參數(shù)資料
| 型號： | LM832N |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | LM832 Dynamic Noise Reduction System DNR |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP14 |
| 封裝： | PLASTIC, DIP-14 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 225K |
| 代理商： | LM832N |
TL/H/5176
L
August 1989
LM832 Dynamic Noise Reduction System DNR
é
General Description
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.
The LM832 is optimized for low voltage operation with input
levels around 30 mVrms.
For higher input levels use the LM1894.
DNR
é
is a registered trademark of National Semiconductor Corporation.
The DNR
é
system is licensed to National Semiconductor Corp. under U.S. patent 3,678,416
and 3,753,159.
A trademark and licensing agreement is required for the use of this product.
Features
Y
Low voltage battery operation
Y
Non-complementary noise reduction, ‘‘single ended’’
Y
Low cost external components, no critical matching
Y
Compatible with all prerecorded tapes and FM
Y
10 dB effective tape noise reduction CCIR/ARM
weighted
Y
Wide supply range, 1.5V to 9V
Y
150 mVrms input overload
Y
No royalty requirements
Y
Cascade connection for 17 dB noise reduction
Applications
Y
Headphone stereo
Y
Microcassette players
Y
Radio cassette players
Y
Automotive radio/tape players
Application Circuit
Order Number LM832M See NS Package M14A
Order Number LM832N See NS Package N14A
TL/H/5176–1
FIGURE 1. Component Hook-up for Stereo DNR System
C
1995 National Semiconductor Corporation
RRD-B30M115/Printed in U. S. A.
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