Wide dynamic range operational amplifier
US7193448B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 9, 2002 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Jul 9, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45674
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An operational amplifier has a bias circuit, a differential amplifier, an output stage, and a feed forward circuit. The bias circuit provides a reference. The differential amplifier is coupled to a pair of input terminals and provides a differential output based on the first and second inputs. The output stage responds to the reference and to the differential output so as to supply a current to an output terminal. The feed forward circuit responds to the differential output in order to increase and decrease current to the output terminal. As a result, the feed forward circuit extends the dynamic range of the operational amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.