LM1112A

The LM1112A is a monolithic integrated circuit specifically designed to realize the Dolby B-type noise reduction system.It is a replacement for the LM1111 and the Signetics NE-645/648 but with improved performance figures.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.

Features of the LM1112A are:(1)very high signal/noise ratio, 74 dB encode(CCIR/ARM); (2)wide supply voltage range, 6V to 20V; (3)very close matching to standard dolby characteristics; (4)audible switch-on transients greatly reduced; (5)improved temperature performance; (6)reduced number of precision external components; (7)improved transient stability; (8)input protection diodes.

The absolute maximum ratings of the LM1112A can be summarized as:(1)supply voltage:24V;(2)storage temperature range:-65 to 150;(3)operating temperature range:-20 to 70;(4)lead temperature (soldering, 10 sec.):260.The information given herein, including the specifications and dimensions, is subject to change without prior notice to improve product characteristics. Before ordering, purchasers are advised to contact the Sensitron Semiconductor sales department for the latest version of the datasheet(s).In cases where extremely high reliability is required (such as use in nuclear power control, aerospace and aviation, traffic equipment,medical equipment, and safety equipment), safety should be ensured by using semiconductor devices that feature assured safety or by means of users' fail-safe precautions or other arrangement.In no event shall Sensitron Semiconductor be liable for any damages that may result from an accident or any other cause during operation of the user's units according to the datasheet(s). Sensitron Semiconductor assumes no responsibility for any intellectual property claims or any other problems that may result from applications of information, products or circuits described in the datasheets.

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