Operational amplifier
US8193862B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 2010 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Aug 31, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/555
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A multi-stage amplification type class-AB operational amplifier disclosed includes an amplification stage having plural amplification sections formed in multiple stages, and a class-AB output stage having a bias section and an output section, in which an input signal input to the amplification stage is sequentially amplified by the plural amplification sections, and further amplified by the bias section and the output section of the class-AB output stage. A positive supply voltage applied to the amplification stage is different from a positive supply voltage applied to the class-AB output stage, and a negative supply voltage applied to the amplification stage is different from a negative supply voltage applied to the class-AB output stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.