Operational amplifier
US11777460B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 7, 2020 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Sep 19, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45526
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed is an operational amplifier, including a first-stage gain circuit, a second-stage gain circuit, and a tail current compensation circuit. The first-stage gain circuit is connected to the second-stage gain circuit, the first-stage gain circuit is provided with an input terminal, the second-stage gain circuit is provided with an output terminal. The first-stage gain circuit at least includes a tail current source, a first terminal of the tail current compensation circuit is connected to the tail current source, and a second terminal of the tail current compensation circuit is connected to the output terminal of the second-stage gain circuit. The tail current compensation circuit is configured to compensate the tail current source with an output signal of the output terminal of the second-stage gain circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.