PLL circuit having reduced capacitor size

Details PLL circuit having reduced capacitor size PLL circuit having reduced capacitor size

2006-12-26

2006-12-26

Chang, Joseph (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Particular error voltage control

C327S157000

Reexamination Certificate

active

07154345

ABSTRACT:
A PLL circuit, having a control loop for an input to a VCO including first and second charge pumps eash having an output coupled to the input of the VCO; an RC network having a first resistance and a capacitance and being and RC network coupled to the output of the first charge pump. A second resistance coupled between the output of the first charge pump and the input to the VCO, the valve of the capacitance C being reduced by a factor X, whereVVCO=xC′⁢ICP2⁢t+ICP2⁢R2VVCO=VCO input voltageIcp2is the current output by the second charge pumpR2=second resistanceC′=new capacitance value=C*XC=original capacitance value.

REFERENCES:
patent: 5384502 (1995-01-01), Volk
patent: 6222421 (2001-04-01), Kiyose
patent: 6538519 (2003-03-01), Lo et al.
patent: 2003/0034846 (2003-02-01), Fan
patent: 10050294 (2002-07-01), None

Affiliated with

Also associated with

Rating

PLL circuit having reduced capacitor size does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with PLL circuit having reduced capacitor size, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PLL circuit having reduced capacitor size will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3706040