Switched capacitor circuit capable of minimizing clock...

Details Switched capacitor circuit capable of minimizing clock... Switched capacitor circuit capable of minimizing clock...

2009-10-09

2011-12-27

Pert, Evan (Department: 2826)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Including oscillatory or shock-excited circuit

C331S105000, C331S1170FE, C331S1170FE

Reexamination Certificate

active

08085087

ABSTRACT:
A switched capacitor circuit includes a positive side capacitor coupled to a first positive side node; a first positive side switch element for selectively coupling the first positive side node to a second node according to a first control signal; and a precharge circuit coupled to the first positive side node for precharging the first positive side node to a precharge voltage for a predetermined time when the first positive side switch element is switched off according to the first control signal, and then for charging the first positive side node to a charge voltage until the first positive side switch element is switched on according to the first control signal. By rapidly precharging the first positive side node, the clock feedthrough effect is eliminated and the locking period of the VCO is shortened. Afterwards by charging the first positive side node, the phase noise of the VCO is minimized.

REFERENCES:
patent: 5977840 (1999-11-01), Connell
patent: 6181215 (2001-01-01), Kuttner
patent: 6393070 (2002-05-01), Reber
patent: 6975156 (2005-12-01), Yeh
patent: 1269920 (2000-10-01), None

Affiliated with

Also associated with

Rating

Switched capacitor circuit capable of minimizing clock... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switched capacitor circuit capable of minimizing clock..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switched capacitor circuit capable of minimizing clock... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4313324