Linearized charge pump having an offset

Details Linearized charge pump having an offset Linearized charge pump having an offset

2005-12-22

2010-11-16

Pascal, Robert (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Particular error voltage control

C331S016000, C327S157000, C327S536000

Reexamination Certificate

active

07834707

ABSTRACT:
A charge pump provides charge based on a phase difference between a reference signal and a feedback signal. The relationship between the charge and the phase difference is referred to as the charge phase relationship. Charge pumps typically have a non-linear charge phase relationship. A non-linear portion of the charge phase relationship occurs about a point at which the charge and the phase difference are substantially zero. Points along charge phase relationship that represent the performance of charge pump are referred to as the charge phase characteristic of the charge pump. The charge pump includes an offset current circuit, which biases the charge pump to have a linear charge phase characteristic. For example, the charge pump is biased to have a charge phase characteristic that does not overlap with the non-linear portion of the charge phase relationship.

REFERENCES:
patent: 5945855 (1999-08-01), Momtaz
patent: 6236278 (2001-05-01), Olgaard
patent: 6727735 (2004-04-01), Park
patent: 6985708 (2006-01-01), Lin et al.
patent: 7082176 (2006-07-01), Chien et al.
patent: 7127225 (2006-10-01), Jaehne et al.
patent: 7382849 (2008-06-01), Groe et al.
patent: 2003/0231729 (2003-12-01), Chien et al.

Affiliated with

Also associated with

Rating

Linearized charge pump having an offset does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Linearized charge pump having an offset, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linearized charge pump having an offset will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4201935