Fast settling capacitive gain amplifier circuit
US10158334B2 · kind B2 · utility
3Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 2017 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | May 19, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/496
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A capacitive gain amplifier circuit amplifies an input signal by a pair of differential amplifier circuits couples in series. The first differential amplifier circuit is reset during an autozero phase while disconnected from the second differential amplifier circuit, and the first and second differential amplifier circuits are connected together in series during a chop phase. A set of feedback capacitors is selectively switched in between respective outputs of the second differential amplifier circuit and respective inputs of the first differential amplifier circuit during the chop phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.