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Constant transductance input stage and integrated circuit implementations thereof

  • US 5,714,906 A
  • Filed: 08/14/1995
  • Issued: 02/03/1998
  • Est. Priority Date: 08/14/1995
  • Status: Expired due to Fees
First Claim
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1. A method for operating an integrated circuit to enhance the consistency of transconductance exhibited by it, said circuit comprising a differential input stage having at least a first transistor pair of a first conductivity type providing a first output in response to an applied input signal and having at least a second transistor pair of a second conductivity type electrically coupled in parallel with said first transistor pair and responsive to said applied input to provide a second output, said method comprising the steps of:

  • simultaneously processing said first and second outputs with respect to the amplitudes exhibited thereby;

    selecting that instantaneously occurring one of said first output or said second output exhibiting the highest amplitude to provide a selected output; and

    applying said selected output corresponding with said highest amplitude, to a next stage of said integrated circuit.

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