Reference voltage circuit having a substantially zero temperature coefficient

  • US 5,666,046 A
  • Filed: 08/24/1995
  • Issued: 09/09/1997
  • Est. Priority Date: 08/24/1995
  • Status: Expired due to Term
First Claim
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1. A reference voltage circuit, comprising:

  • a first amplifier circuit for generating a current having a positive temperature coefficient, the first amplifier circuit including a delta voltage generating circuit and having an output;

    a second amplifier circuit for generating a current having a negative temperature coefficient, a portion of the delta voltage generating circuit common to the second amplifier circuit, the second amplifier circuit having an output, wherein the outputs of the first and second amplifier circuits are coupled to form a common electrode; and

    a summing circuit coupled to the common electrode.

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