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Reducing noise and/or power consumption in a switched capacitor amplifier sampling a reference voltage

  • US 7,358,801 B2
  • Filed: 08/05/2005
  • Issued: 04/15/2008
  • Est. Priority Date: 08/16/2004
  • Status: Active Grant
First Claim
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1. A switched capacitor amplifier circuit comprising:

  • an operational amplifier having a first input terminal and a second input terminal;

    a first sampling capacitor being connected between an input signal and said first input terminal in a first phase; and

    a first reference capacitor being coupled between said first input terminal and a reference voltage in said first phase, said first reference capacitor being connected between said first input terminal and a non-zero voltage in a second phase.

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