Invention Grant
- Patent Title: Compensation circuit for operational amplifier, integrated circuit and display panel
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Application No.: US16875220Application Date: 2020-05-15
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Publication No.: US10897229B1Publication Date: 2021-01-19
- Inventor: Haodong Zhang , Ping-Lin Liu
- Applicant: SeeYA Optronics Co., Ltd.
- Applicant Address: CN Shanghai
- Assignee: SeeYA Optronics Co., Ltd.
- Current Assignee: SeeYA Optronics Co., Ltd.
- Current Assignee Address: CN Shanghai
- Agency: Knobbe Martens Olson & Bear LLP
- Priority: CN201911130366 20191119
- Main IPC: H03F1/14
- IPC: H03F1/14 ; H03F1/02 ; H03F3/45 ; G09G3/20

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.
Information query
IPC分类: