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LM832

National Semiconductor
Part Number LM832
Manufacturer National Semiconductor
Description LM832 Dynamic Noise Reduction System DNR
Published Mar 22, 2005
Detailed Description LM832 Dynamic Noise Reduction System DNR August 1989 LM832 Dynamic Noise Reduction System DNR General Description The ...
Datasheet PDF File LM832 PDF File

LM832
LM832

Overview
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 Y Y Y Y Y Y Y Y Y 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 Y Y Y Y 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 Number LM832N See NS Package N14A FIGURE 1 Component Hook-up for Stereo DNR System TL H 5176 – 1 C1995 National Semiconductor Corporation TL H 5176 RRD-B30M115 Printed in U S A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Power Dissipation (Note 1) Input Voltage Storage Temperature Operating Temperature (Note 1) 10V 1 2W 1 7 Vpp b 65 to a 150 C...


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