Invention Grant
US08816670B2 Electronic circuit having band-gap reference circuit and start-up circuit, and method of starting-up band-gap reference circuit
有权
具有带隙参考电路和启动电路的电子电路，以及启动带隙基准电路的方法
- Patent Title: Electronic circuit having band-gap reference circuit and start-up circuit, and method of starting-up band-gap reference circuit
- Patent Title (中): 具有带隙参考电路和启动电路的电子电路，以及启动带隙基准电路的方法
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Application No.: US13249571Application Date: 2011-09-30
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Publication No.: US08816670B2Publication Date: 2014-08-26
- Inventor: Chia-Fu Lee , Chih-Feng Li
- Applicant: Chia-Fu Lee , Chih-Feng Li
- Applicant Address: TW
- Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee Address: TW
- Agency: Lowe Hauptman & Ham, LLP
- Main IPC: G06F3/16
- IPC: G06F3/16
Abstract:
An electronic circuit includes a band-gap reference circuit and a start-up circuit. The band-gap reference circuit includes an operational amplifier which has an output and first and second inputs. The band-gap reference circuit is configured to generate a predetermined reference voltage at the output of the operational amplifier after a start-up phase of the band-gap reference circuit. The start-up circuit includes at least one switch arranged to connect at least one current source to at least one of the inputs of the operational amplifier during the start-up phase, and to disconnect the at least one current source from the at least one of the inputs of the operational amplifier after the start-up phase.
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