|
|
LM1112AのメーカーはNational Semiconductorです、この部品の機能は「Dolby B-Type Noise Reduction Processor」です。 |
部品番号 | LM1112A |
| |
部品説明 | Dolby B-Type Noise Reduction Processor | ||
メーカ | National Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとLM1112Aダウンロード(pdfファイル)リンクがあります。 Total 8 pages
LM1112A LM1112B LM1112C
Dolby B-Type Noise Reduction Processor
April 1987
General Description
The LM1112 is a monolithic integrated circuit specifically
designed to realize the Dolby B-type noise reduction sys-
tem
It is a replacement for the LM1111 and the Signetics NE-
645 648 but with improved performance figures
Features
Y Very high signal noise ratio 74 dB encode
(CCIR ARM)
Y Wide supply voltage range 6V to 20V
Y Very close matching to standard Dolby characteristics
Y Audible switch-on transients greatly reduced
Y Improved temperature performance
Y Reduced number of precision external components
Y Improved transient stability
Y Input protection diodes
Available only to licensees of Dolby Laboratories Licensing Corporation San Francisco from whom licensing and application information must be obtained
Dolby and the double-D symbol are registered trademarks of Dolby Laboratories Licensing Corporation
Schematic Diagram
C1995 National Semiconductor Corporation TL H 7876
TL H 7876 – 1
RRD-B30M115 Printed in U S A
1 Page Typical Performance Characteristics
Signal Noise Ratio vs Source Impedance
Encode Mode (CCIR ARM)
Gain vs Frequency (NR OFF)
Total Harmonic Distortion 0 dB Level
TL H 7876 – 2
Total Harmonic Distortion a10 dB Level
Back to Back Response Error vs Frequency and
Supply Voltage (Standard Dolby Encoder)
Back to Back Response vs Frequency and
Temperature (Encoder Temperature 25 C)
TL H 7876 – 3
TL H 7876 – 4
3
3Pages Test Circuit (Encode)
Note 1 1 nF capacitors from pin 3 and pin 7 to ground may be required on older devices
Note 2 Where not otherwise specified component tolerances are g10%
Note 3 For LM1112AN use 2% components for C304 R303 R305 (5% components may cause errors up to a0 3 dB )
Connection Diagram
Dual-In-Line Package
TL H 7876 – 12
Order Number LM1112AN LM1112BN
or LM1112CN
See NS Package Number N16E
TL H 7876 – 13
6
6 Page | |||
ページ | 合計 : 8 ページ | ||
|
PDF ダウンロード | [ LM1112A データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
LM1112 | Dolby B-Type Noise Reduction Processor | National Semiconductor |
LM1112A | Dolby B-Type Noise Reduction Processor | National Semiconductor |
LM1112B | Dolby B-Type Noise Reduction Processor | National Semiconductor |
LM1112C | Dolby B-Type Noise Reduction Processor | National Semiconductor |