Offset voltage calibration method and apparatus and amplifier thereof
US7924088B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2009 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Dec 25, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45616
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An offset voltage calibration method is disclosed, which is utilized for calibrating an offset voltage of an electronic device during a calibration period. The offset voltage calibration method includes generating a control signal according to an output signal of the electronic device, counting a count value and generating an offset indication signal according to the control signal, stopping counting and generating a final count value according to a compensation value after the output signal changes state, generating a calibration signal according to the count value or the final count value, and calibrating the offset voltage according to the offset indication signal and the calibration signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.