Differential amplifier having an improved slew rate
US7548117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2007 |
| Grant date | Jun 16, 2009 |
| Priority date | — |
| Expiry date | May 20, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45648
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A differential amplifier receives a differential input signal and generates an output signal at an output node. An auxiliary circuit coupled to the differential amplifier operates to improve slew rate response. In quiescent and small signal situations with respect to the differential input signal, the auxiliary circuit does not alter or change operation of the differential amplifier. However, in situations where a large signal change is experienced with respect to the differential input signal, the auxiliary circuit functions to speed up the sourcing and sinking current to/from the output node. A stability compensation capacitor coupled to the output node is accordingly more quickly charged or discharged and an improvement in slew rate performance of the differential amplifier is experienced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.