Output stage of a class-A amplifier
US8624674B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2010 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Sep 9, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/3027
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An output stage of an integrated class-A amplifier in a technology adapted to a first voltage and intended to be powered by a second voltage greater than the first one, including: one or several transistors of a first channel type between a first terminal of application of the second voltage and an output terminal of the stage; transistors of a second channel type between this output terminal and a second terminal of application of the second voltage, wherein: a first transistor of the second channel type has its gate directly connected to an input terminal of the stage; at least a second and a third transistors of the second channel type are in series between the output terminal and said first transistor, the gate of the second transistor being connected to the midpoint of a resistive dividing bridge between said output terminal and the gate of the third transistor, and the gate of the third transistor being biased to a fixed voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.