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Reference buffer with multiple gain stages for large, controlled effective transconductance

  • US 5,854,574 A
  • Filed: 04/26/1996
  • Issued: 12/29/1998
  • Est. Priority Date: 04/26/1996
  • Status: Expired due to Term
First Claim
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1. A reference buffer amplifier comprising:

  • a transconductance amplifier including a voltage input, received on an input terminal, and a current output, provided on an output terminal, the output terminal connected in feedback to the input terminal, the transconductance amplifier including;

    a plurality of voltage gain stages connected in cascade;

    at least one transconductance stage connected to a last-connected of the plurality of voltage gain stages; and

    a load capacitor, that controls a bandwidth of the reference buffer, one terminal of which is connected to the output terminal of the transconductance amplifier and another terminal of which is connected a node external to the transconductance amplifier.

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