Method, apparatus, and system for common mode feedback circuit using switched capacitors
US6573785B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2002 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Jan 3, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45421
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
According to one aspect of the invention, an apparatus is provided which includes a first amplifier and a common mode feedback circuit. The first amplifier includes a first input, a second input, a first output, and a second output. The first input and the second input are coupled to receive a first input voltage and a second input voltage, respectively. The first and second outputs provide a first output voltage and a second output voltage, respectively. The common mode feedback circuit has first and second switched capacitors coupled to provide a common mode feedback signal based on the first and second output voltages to the first and second inputs of first amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.