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Comparator-based switched capacitor circuit for scaled semiconductor fabrication processes

  • US 7,319,425 B2
  • Filed: 01/30/2006
  • Issued: 01/15/2008
  • Est. Priority Date: 03/21/2005
  • Status: Active Grant
First Claim
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1. A switched capacitor circuit for performing an analog circuit function, comprising:

  • a first switched capacitance network having an input terminal to receive a circuit input voltage during a first phase;

    a comparator having an output terminal and an input terminal, the input terminal being in communication with the first switched capacitance network;

    a second switched capacitance network having a first switched terminal in communication with the output terminal of the comparator; and

    a first current source in communication with the first and the second switched capacitance networks, the first current source supplying a current to charge the first and the second switched capacitance networks during a second phase.

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