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參數(shù)資料
| 型號： | LM1894M/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO14 |
| 封裝： | LEAD FREE, SOP-14 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 340K |
| 代理商： | LM1894M/NOPB |
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 prere-
corded 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.
00791801
*R1+R2=1k
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
2004 National Semiconductor Corporation
DS007918
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM1894MT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LM1894MTBD | 功能描述:BOARD EVALUATION LM1894 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
| LM1894MX | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| LM1894MX/NOPB | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝: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 |
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