Self-calibration circuit and method for capacitors
US7924209B2 · kind B2 · utility
11Cited by
3References
9Claims
0Family size
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Key dates
| Filing date | Jun 5, 2009 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Aug 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/804
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.