发明授权
- 专利标题: Integrated transducer amplifier with zener-zap programming
- 专利标题(中): 具有齐纳瓦编程功能的集成式传感器放大器
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申请号: US422153申请日: 1995-04-14
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公开(公告)号: US5796298A公开(公告)日: 1998-08-18
- 发明人: Mark Billings Kearney , Dennis Michael Koglin , Douglas Bruce Osborn
- 申请人: Mark Billings Kearney , Dennis Michael Koglin , Douglas Bruce Osborn
- 申请人地址: IN Kokomo
- 专利权人: Delco Electronics Corporation
- 当前专利权人: Delco Electronics Corporation
- 当前专利权人地址: IN Kokomo
- 主分类号: G01L9/12
- IPC分类号: G01L9/12 ; G01P21/00 ; H01L25/00
摘要:
In accordance with the teachings of the present invention, a programmable integrated transducer amplifier circuit is provided which receives differential outputs from a transducer, such as a pressure or accelerometer transducer. The programmable integrated transducer amplifier circuit includes binary adjustable circuits that are programmed in response to binary coded signals. The binary adjustable circuits generate binary weighted currents that are employed to adjust the operating characteristics of the amplifier circuit. The binary coded signals are received from a programmable memory array which includes a plurality of memory cells that store binary information. Each of the memory cells are programmed when coupled to a programming signal. Additionally, the memory array has pretest capability for testing outputs of the memory cells prior to permanently programming the respective memory cells. Additionally, the integrated transducer amplifier circuit automatically compensates for variations in the operating temperature of the amplifier circuit. The method of temperature compensation is accomplished by operating the programmable integrated transducer amplifier circuit at a first temperature such that a temperature compensation voltage is "nulled" or is forced to equal zero. Thereafter, the integrated transducer amplifier circuit is operated at other temperatures such that the temperature compensation voltage is generated in a manner representing the difference between the first operating temperatures and the current operating temperature.
公开/授权文献
- US4987216A Wholly aromatic polyamide 公开/授权日:1991-01-22
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