LM1112 Datasheet: Dolby B-Type Noise Reduction Processor





LM1112 Dolby B-Type Noise Reduction Processor Datasheet

Part Number LM1112
Description Dolby B-Type Noise Reduction Processor
Manufacture National Semiconductor
Total Page 8 Pages
PDF Download Download LM1112 Datasheet PDF

Features: LM1112A LM1112B LM1112C Dolby B-Type Noi se Reduction Processor LM1112A LM1112B LM1112C Dolby B-Type Noise Reduction P rocessor April 1987 General Descripti on The LM1112 is a monolithic integrate d circuit specifically designed to real ize the Dolby B-type noise reduction sy stem It is a replacement for the LM1111 and the Signetics NE645 648 but with i mproved performance figures Features Y Very high signal noise ratio 74 dB enc ode (CCIR ARM) Y Wide supply voltage ra nge 6V to 20V Y Very close matching to standard Dolby characteristics Y Audibl e switch-on transients greatly reduced Y Improved temperature performance Y Re duced number of precision external comp onents Y Improved transient stability Y Input protection diodes Available onl y to licensees of Dolby Laboratories Li censing Corporation San Francisco from whom licensing and application informat ion must be obtained Dolby and the doub le-D symbol are registered trademarks o f Dolby Laboratories Licensing Corporation Schematic Diagram .

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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

                    
  






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