System and method for reducing transient response in a fractional n phase lock loop

System and method for reducing transient response in a fractional n phase lock loop

  • CN 101,258,680 A
  • Filed: 05/12/2006
  • Published: 09/03/2008
  • Est. Priority Date: 05/28/2005
  • Status: Active Application
First Claim
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1. phase-locked loop (PLL) that comprises charge pump, described charge pump comprises:

  • Adapt mode charge pump, it was enabled at first predetermined amount of time before first little electric current is added on it;

    When second predetermined amount of time expires, described first little electric current is disconnected and the described adapt mode charge pump of stopping using;

    AndNormal mode charge pump adds second little electric current thereon.

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