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Control circuit with both positive and negative sensing

  • US 6,081,140 A
  • Filed: 02/06/1998
  • Issued: 06/27/2000
  • Est. Priority Date: 02/06/1998
  • Status: Expired due to Term
First Claim
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1. A control circuit, comprising:

  • a comparator, having an input and having a control output circuit operative in a first state or a second state;

    a sense input for coupling a sense signal of positive or negative polarity to said comparator;

    wherein said control output circuit changes between said first state and second state whenever the absolute value of said sense signal exceeds a systematic offset associated with the operation of said comparator; and

    a bias generator, for generating a bias value for defining said systematic offset, configured of at least one semiconductor device occupying a unit area of a substrate.

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