Switched-capacitor network with input-output common mode decoupling
US9461625B1 · kind B1 · utility
7Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 2013 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Jun 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45551
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Various embodiments of the invention provide for cancellation of unwanted signals in switched-capacitor circuits. In certain embodiments cancellation this is accomplished by performing a multi-phase CDS technique. The technique comprises resetting capacitive elements in the feedback path of an operational amplifier during a reset interval, maintaining a decoupled condition during a sampling interval in which the unwanted signals are sampled, and cancelling unwanted signals in a sensing interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.