Phase-frequency detector and charge pump with feedback

Details Phase-frequency detector and charge pump with feedback Phase-frequency detector and charge pump with feedback

2006-03-21

2006-03-21

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S536000, C327S003000, C327S007000, C327S012000, C363S059000, C363S060000

Reexamination Certificate

active

07015734

ABSTRACT:
An apparatus comprising a first circuit configured to generate (i) a pump up signal in response to a reference signal and a reset signal and (ii) a pump down signal in response to an input signal and said reset signal and a second circuit configured to (i) generate said reset signal in response to said pump up signal and said pump down signal.

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patent: 6140853 (2000-10-01), Lo

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