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LM1894M bảng dữ liệu(PDF) 1 Page - National Semiconductor (TI) |
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LM1894M bảng dữ liệu(HTML) 1 Page - National Semiconductor (TI) |
1 / 10 page 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 = 1k Ω total. See Application Hints. Order Number LM1894M or LM1894N See NS Package Number M14A or N14A FIGURE 1. Component Hook-Up for Stereo DNR System December 1994 © 1999 National Semiconductor Corporation DS007918 www.national.com |
Số phần tương tự - LM1894M |
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Mô tả tương tự - LM1894M |
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