Operational amplifier having DC offset cancellation capability
US7999612B2 · kind B2 · utility
6Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 27, 2010 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Feb 14, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45728
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An operational amplifier includes an input stage for generating a first differential output signal pair according to a first differential input signal pair, an output stage for generating a second differential output signal pair according to at least a second differential input signal pair, and a high-pass filtering circuit coupled between the input stage and the output stage for performing high-pass filtering on the first differential output signal pair, for generating the at least a second differential input signal pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.