器件名称: LM832
功能描述: LM832 Dynamic Noise Reduction System DNR
文件大小: 225.59KB 共11页
简 介:LM832 Dynamic Noise Reduction System DNR
August 1989
LM832 Dynamic Noise Reduction System DNR
General Description
The LM832 is a stereo noise reduction circuit for use with audio playback systems The DNR system is noncomplementary 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 components required The LM832 is optimized for low voltage operation with input levels around 30 mVrms For higher input levels use the LM1894
Features
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Low voltage battery operation 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 Cascade connection for 17 dB noise reduction
Applications
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DNR is a registered trademark of National Semiconductor Corporation The DNR 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
Headphone stereo Microcassette players Radio cassette players Automotive radio tape players
Application Circuit
Order Number LM832M See NS Package M14A Order Numb……
