发明授权
US08797026B2 Comparator circuit having latching behavior and digital output sensors therefrom
有权
具有锁存特性的比较器电路和数字输出传感器
- 专利标题: Comparator circuit having latching behavior and digital output sensors therefrom
- 专利标题(中): 具有锁存特性的比较器电路和数字输出传感器
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申请号: US13324500申请日: 2011-12-13
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公开(公告)号: US08797026B2公开(公告)日: 2014-08-05
- 发明人: Wayne Kilian
- 申请人: Wayne Kilian
- 申请人地址: US NJ Morristown
- 专利权人: Honeywell International Inc.
- 当前专利权人: Honeywell International Inc.
- 当前专利权人地址: US NJ Morristown
- 代理机构: Thompson Patent Law Offices
- 代理商 Craige Thompson
- 主分类号: H03F3/45
- IPC分类号: H03F3/45
摘要:
A digital output sensor includes a sensing structure that outputs a differential sensing signal and includes at least one sensing element. An integrated circuit includes a substrate including signal conditioning circuitry for conditioning the sensing signal that includes a differential amplifier coupled to receive the sensing signal and provide first and second differential outputs and a comparator having input transistors coupled to receive outputs from the differential amplifier. The comparator also includes first and second current-mirror loads that provide differential drive currents and are coupled to the input transistors in a cross coupled configuration to provide hysteresis. An output driver is coupled to receive the differential drive currents. An output stage includes at least one output transistor which is coupled to the output driver for providing a digital output for the sensor. A voltage regulator is coupled to receive a supply voltage and output at least one regulated supply voltage.