Analog to digital converter with low power control

  • US 7,573,416 B1
  • Filed: 04/30/2008
  • Issued: 08/11/2009
  • Est. Priority Date: 04/30/2008
  • Status: Active Grant
First Claim
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1. A circuit comprising:

  • a reference voltage generating circuit having an input and an output terminal for providing a reference voltage;

    a first switch having a first terminal coupled to a first power supply voltage terminal, a second terminal coupled to the input and the output terminal of the reference voltage generating circuit, and a control terminal for receiving a first control signal;

    a second switch having a first terminal coupled to the input and the output terminal of the reference voltage generating circuit, a second terminal, and a control terminal for receiving a second control signal; and

    a capacitive element having a first plate electrode coupled to the second terminal of the second switch, and a second plate electrode coupled to a second power supply voltage terminal.

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