Digital calibration techniques for segmented capacitor arrays

Details Digital calibration techniques for segmented capacitor arrays Digital calibration techniques for segmented capacitor arrays

2008-12-11

2010-10-12

Mis, David (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

With reference oscillator or source

C331S00100A, C331S03600C, C331S044000, C331S179000

Reexamination Certificate

active

07812678

ABSTRACT:
An apparatus includes phase detection circuitry that generates control signals in response to an input clock signal and a feedback clock signal. The apparatus also includes a clock signal generation circuit that includes fine and coarse capacitors. The clock signal generation circuit changes a capacitance of the capacitors that are affecting the output clock signal in response to a change in the control signals. The apparatus also includes measurement circuitry that determines a calibration number of the fine capacitors having a combined capacitance that most closely matches a capacitance of one of the coarse capacitors.

REFERENCES:
patent: 6707403 (2004-03-01), Hurrell
patent: 2003/0133522 (2003-07-01), Staszewski et al.
A. V. Rylyakov et al., “A Wide Power-Supply Range (0.5V-to-1.3V) Wide Tuning Range (500MHz-to-8 GHz) All-Static CMOS AD PLL in 65nm SOI,” 2007 IEEE International Solid-State Circuits Conference / Session 9 / Clocking / 9.1, Feb. 13, 2007, pp. 172-173.
Robert Bogdan Staszewski et al., “All-Digital TX Frequency Synthesizer and Discrete-Time Receiver for Bluetooth Radio in 130-nm CMOS,” IEEE Journal of Solid-State Circuits, vol. 39, No. 12, Dec. 2004, pp. 2278-2291.
Unpublished U.S. Appl. No. 12/163,808, filed Jun. 27, 2008, by Moussavi, et al.
Unpublished U.S. Appl. No. 12/168,811, filed Jul. 7, 2008, by Moussavi.
Unpublished U.S. Appl. No. 12/272,266, filed Nov. 17, 2008, by William W. Bereza et al.

Affiliated with

Also associated with

Rating

Digital calibration techniques for segmented capacitor arrays does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital calibration techniques for segmented capacitor arrays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital calibration techniques for segmented capacitor arrays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4181502