Compensation circuit for operational amplifier, integrated circuit and display panel
US10897229B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2020 |
| Grant date | Jan 19, 2021 |
| Priority date | — |
| Expiry date | May 15, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45156
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Provided is a compensation circuit for an operational amplifier including a primary pole. The compensation circuit includes: a control circuit; and a compensation capacitor including a first terminal connected to the primary pole, and a second terminal connected to an output terminal of the control circuit. The control circuit includes: a pull-up module including a control terminal connected to a second control signal terminal, an input terminal connected to an input power supply, and an output terminal connected to a first control node being the output terminal of the control circuit; a pull-down module including a control terminal connected to a first control signal terminal, and an output terminal connected to ground; and an input transistor including a control terminal connected to the primary pole, an input terminal connected to a first control node, and an output terminal connected to an input terminal of the pull-down module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.