Differential amplifier circuit
US6501333B1 · kind B1 · utility
1Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2001 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Jun 21, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/45085
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A differential amplifier circuit comprises: an amplifying section including first and second current branches and an output stage which comprises a current sinking element and a control element. The circuit also includes a current limiting section which comprises a current detecting element connected to detect the current through the current sinking element and arranged to drive the current limiting element when the detected current exceeds a predetermined threshold to inject current at the collector of the transistor in the first current branch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.