Charge pump for reducing current mismatch

Details Charge pump for reducing current mismatch Charge pump for reducing current mismatch

2006-12-29

2008-10-21

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S148000

Reexamination Certificate

active

07439784

ABSTRACT:
A charge pump circuit is disclosed, including: a dummy current path comprising a first junction node; a normal current path comprising a second junction node; a switch, coupled between the dummy current path and the normal current path; wherein when the switch is closed a first voltage is at the first junction node and the second junction node, and when the switch is open a second voltage is at the first junction node; and a comparator, for comparing the first voltage and the second voltage to balance a current mismatch of the charge pump circuit. The disclosed charge pump circuit can be implemented in a phase locked loop system.

REFERENCES:
patent: 6043717 (2000-03-01), Kurd
patent: 6229362 (2001-05-01), Choi
patent: 6242956 (2001-06-01), McCollough et al.
patent: 6262610 (2001-07-01), Lo et al.
patent: 6850102 (2005-02-01), Hsu et al.
patent: 7034588 (2006-04-01), Cheung et al.
patent: 7148757 (2006-12-01), Chiu
patent: 7184510 (2007-02-01), Jung
patent: 7202718 (2007-04-01), Lindner et al.
patent: 2003/0038661 (2003-02-01), Chokkalingam et al.
patent: 2004/0012425 (2004-01-01), Hsu
patent: 2005/0162213 (2005-07-01), Yoshimura

Affiliated with

Also associated with

Rating

Charge pump for reducing current mismatch does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Charge pump for reducing current mismatch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Charge pump for reducing current mismatch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3991552