Programmable gain amplifier with self-adjusting offset correction
US7302246B2 · kind B2 · utility
15Cited by
5References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2002 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Aug 15, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45591
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Briefly, in accordance with one embodiment of the invention, a calibration circuit may detect a difference between first and second outputs of a differential output programmable gain amplifier to determine a dc offset at the differential output. In the event an offset is detected, a differential gain of the programmable gain amplifier may be adjusted until the offset is adjusted, or eliminated, to an acceptable predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.