Power amplification circuit and operational amplifier incorporating said circuit
US7274252B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2005 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Jun 21, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier circuit comprising first and second modules, a current source and a push-pull module. The push-pull module comprises two intermediate transistors and two output transistors. The circuit also comprises third and fourth modules, operating in current mirror mode. Inputs of the third module are respectively connected to one main electrode of one of the intermediate transistors and to a node internal to the first module. Outputs of the fourth module are respectively connected to a main electrode of the other intermediate transistor and to a node internal to the second module. The circuit is designed to form a power output stage of an operational amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.