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| 型号： | LM1894MWC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, UUC |
| 封装： | WAFER |
| 文件页数： | 1/12页 |
| 文件大小： | 345K |
| 代理商： | LM1894MWC |
LM1894
Dynamic Noise Reduction System DNR
General Description
The LM1894 is a stereo noise reduction circuit for use with
audio
playback
systems.
The
DNR
system
is
non-complementary, meaning it does not require encoded
source material. 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 compo-
nents required.
Features
n
Non-complementary noise reduction, “single ended”
n
Low cost external components, no critical matching
n
Compatible with all prerecorded tapes and FM
n
10 dB effective tape noise reduction CCIR/ARM
weighted
n
Wide supply range, 4.5V to 18V
n
1 Vrms input overload
Applications
n
Automotive radio/tape players
n
Compact portable tape players
n
Quality HI-FI tape systems
n
VCR playback noise reduction
n
Video disc playback noise reduction
Typical Application
DNR is a registered trademark of National Semiconductor Corporation.
The DNR system is licensed to National Semiconductor Corporation under U.S. patent 3,678,416 and 3,753,159.
Trademark and license agreement required for use of this product.
DS007918-1
*R1+R2 = 1 k
total.
See Application Hints.
Order Number LM1894M, LM1894N, or LM1894MT
See NS Package Number M14A, N14A, or MTC14
FIGURE 1. Component Hook-Up for Stereo DNR System
April 2002
LM1894
Dynamic
Noise
Reduction
System
DNR
2002 National Semiconductor Corporation
DS007918
www.national.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM1894MX | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道数量:Single 共模抑制比（最小值）: 输入补偿电压: 工作电源电压:3 V to 5.5 V 电源电流:5 mA 最大功率耗散: 最大工作温度:+ 70 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-20 封装:Reel |
| LM1894MX/NOPB | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道数量:Single 共模抑制比（最小值）: 输入补偿电压: 工作电源电压:3 V to 5.5 V 电源电流:5 mA 最大功率耗散: 最大工作温度:+ 70 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-20 封装:Reel |
| LM1894N | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:OC White Company 功能描述:Dynamic Noise Reduction System 14-Pin PDIP Rail |
| LM1895 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:AUDIO POWE RAMPLIFIER |
| LM1895N | 制造商:NSC 制造商全称:National Semiconductor 功能描述:AUDIO POWE RAMPLIFIER |
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