High impedance passive switched capacitor common mode feedback network
US10122370B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2017 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Mar 2, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/23
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switched capacitor circuit includes a first capacitor coupled in series with a second capacitor in a first mode of operation across differential output terminals of a circuit. The first capacitor and the second capacitor are coupled in an anti-parallel layout in a second mode of operation. The switched capacitor circuit also includes a third capacitor coupled on a first side to a common node of the first capacitor and the second capacitor. The third capacitor is further coupled on a second side to a current source control voltage in the first mode of operation, and coupled between a bias reference voltage and a common mode reference voltage in the second mode of operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.