In-situ RC-calibration scheme for active RC filter
US8626469B2 · kind B2 · utility
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2References
9Claims
0Family size
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Key dates
| Filing date | Oct 19, 2010 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Sep 5, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2210/04
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of calibrating a filter includes applying an input signal into the filter to generate an output signal, measuring a phase difference between the input signal and the output signal; determining a leading/lagging status of the phase difference; calculating a capacitor code (CAP_CODE) using the leading/lagging status; and calibrating the capacitor using the CAP_CODE.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.