Comparator chain offset reduction

Details Comparator chain offset reduction Comparator chain offset reduction

2008-04-01

2008-04-01

Williams, Howard (Department: 2819)

Coded data generation or conversion

Converter compensation

C341S120000, C327S307000

Reexamination Certificate

active

11351877

ABSTRACT:
Comparator chain total offset, static and dynamic, is reduced by injecting a compensation quantity in at least one point in the chain of comparator components. The compensation quantity is determined by providing the comparator chain with calibration signals having equal values and evaluating the output states of the comparator chain. The compensation quantity is adjusted until the probabilities of high and low output states are substantially equal and a calibrated value for the compensation is determined.

REFERENCES:
patent: 4251803 (1981-02-01), Debord et al.
patent: 4380005 (1983-04-01), Debord et al.
patent: 4996529 (1991-02-01), Connell
patent: 5017805 (1991-05-01), Kase
patent: 5061900 (1991-10-01), Vinn et al.
patent: 5920273 (1999-07-01), Hirano
patent: 5990814 (1999-11-01), Croman et al.
patent: 6507241 (2003-01-01), Ritter
patent: 6794920 (2004-09-01), Aliahmad et al.
patent: 6822501 (2004-11-01), Kinugasa
patent: 6847320 (2005-01-01), Taft et al.
patent: 6900750 (2005-05-01), Nairn
patent: 6982664 (2006-01-01), Nairn
patent: 2003/0117205 (2003-06-01), Cahalane et al.
patent: 2003/0154045 (2003-08-01), Sung et al.
patent: 2005/0219090 (2005-10-01), Jonsson et al.
Richard Fung, “Improving Accuracy of Analog-to-Digital Converters,” Nov. 14, 2002, [retrieved on Oct. 10, 2007]; Retrieved from the Internet <URL: http://www.eecg.utoronto.ca/˜kphang/papers/2002/rfung—AccuracyXofXADCs.pdf>.
Wong, et al., “Offset Compensation in Comparators With Minimum Input-Referred Supply Noise”, IEEE Journal of Solid-State Circuits, vol. 39, No. 5, May 2004 [online], [retrieved on Oct. 10, 2007]; Retrieved from the Internet <URL: http://www.ee.ucla.edu/˜ckygroup/papers/wong—issc—may04.pdf>.

Affiliated with

Also associated with

Rating

Comparator chain offset reduction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Comparator chain offset reduction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparator chain offset reduction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3932264