Common mode input control for switch capacitor amplifier in pipeline analog-to-digital converter
US8922275B2 · kind B2 · utility
2Cited by
2References
8Claims
0Family size
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Key dates
| Filing date | Aug 16, 2012 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Aug 16, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/164
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A common mode bias circuit may include a weak common mode bias generator and a common mode bias capacitance. During a first state of the common mode bias circuit, the weak common mode bias generator may be coupled to the common mode bias capacitance and may impart to them a predefined common mode signal level. During a second state of the common mode bias circuit, the common mode bias capacitance may be coupled to differential inputs of an amplifier in a manner that establishes an input common mode level for the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.