Self-calibration circuit and method for capacitors

Details Self-calibration circuit and method for capacitors Self-calibration circuit and method for capacitors

2011-04-12

2011-04-12

Lauture, Joseph (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S118000

Reexamination Certificate

active

07924209

ABSTRACT:
A self-calibration circuit and method for capacitors are provided. A capacitor array is calibrated to approximate a reference capacitor according to an average parameter generated by calibrating the capacitor array multiple times. Since the capacitance of the compensation capacitor required to be connected to the target capacitor in parallel is determined according to the average parameter generated by performing the calibration multiple times, the error caused by a single calibration can be reduced, and meanwhile the calibration error caused by a reference voltage error or noise is reduced.

REFERENCES:
patent: 4709225 (1987-11-01), Welland et al.
patent: 5235335 (1993-08-01), Hester et al.
patent: 7170439 (2007-01-01), Chen
patent: I231098 (2005-04-01), None

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