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Semiconductor device having a sensor with the temperature compensation function

  • US 6,433,615 B2
  • Filed: 06/14/2001
  • Issued: 08/13/2002
  • Est. Priority Date: 12/15/1998
  • Status: Expired due to Term
First Claim
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1. A semiconductor device comprising:

  • amplifying means for receiving a sensor output signal from a sensor, amplifying the sensor output signal at a required temperature-independent amplification factor, and canceling an offset, reference signal producing means for producing a reference signal varying at a temperature coefficient equal to that of the sensor signal from said sensor, comparing means which compares a magnitude of an amplification output signal from said amplifying means with that of the reference signal from said reference signal producing means and outputs a required signal according to a comparison result, and constant voltage generating means for generating temperature-independent constant voltage to be supplied to said sensor, characterized in that said amplifying means, said reference signal producing means, said comparing means, and said constant voltage generating means are formed using a semiconductor layer provided on an insulating substrate.

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