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DIFFERENTIAL CHARGE PUMP

  • US 20050083090A1
  • Filed: 10/16/2003
  • Published: 04/21/2005
  • Est. Priority Date: 10/16/2003
  • Status: Active Grant
First Claim
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1. A differential charge pump comprising:

  • a capacitive structure having a first plate and a second plate;

    a first control branch for charging the first plate when a first signal is asserted, and discharging the first plate when a second signal is asserted;

    a second control branch for discharging the second plate when the first signal is asserted, and charging the second plate when the second signal is asserted;

    a first common mode branch for charging or discharging the first plate to a common mode voltage when the first signal and the second signal are at the same level; and

    a second common mode branch for charging or discharging the second plate to the common mode voltage when the first signal and the second signal are at the same level.

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