A digital phase detector and charge pump circuit system reset circuit and method resets a digital phase detector according to the charge outputs between the charge pump circuits and a following loop filter. The sensing circuitry emulates portions of the circuitry of the digital phase detector and charge...http://www.google.fr/patents/US6140853?utm_source=gb-gplus-shareBrevet US6140853 - Digital phase detector and charge pump system reset and balanced current source matching
Digital phase detector and charge pump system reset and balanced current ...