Invention Grant
- Patent Title: Constant output reference voltage circuit
- Patent Title (中): 恒定输出参考电压电路
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Application No.: US13609944Application Date: 2012-09-11
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Publication No.: US08791686B2Publication Date: 2014-07-29
- Inventor: Taro Yamasaki , Fumiyasu Utsunomiya
- Applicant: Taro Yamasaki , Fumiyasu Utsunomiya
- Applicant Address: JP Chiba
- Assignee: Seiko Instruments Inc.
- Current Assignee: Seiko Instruments Inc.
- Current Assignee Address: JP Chiba
- Agency: Brinks Gilson & Lione
- Priority: JP2011-211220 20110927
- Main IPC: G05F1/10
- IPC: G05F1/10 ; G05F3/02 ; G05F3/16 ; G05F3/20
Abstract:
The voltage reference circuit includes: a first MOS transistor; a second MOS transistor including a gate terminal connected to a gate terminal of the first MOS transistor and having an absolute value of a threshold value and a K value higher than an absolute value of a threshold value and a K value of the first MOS transistor; a current mirror circuit flowing a current based on a difference between the absolute values of the threshold values of the first MOS transistor and the second MOS transistor; a third MOS transistor flowing the current; and a fourth MOS transistor having an absolute value of a threshold value and a K value higher than an absolute value of a threshold value of the third MOS transistor and flowing the current.
Public/Granted literature
- US20130076331A1 VOLTAGE REFERENCE CIRCUIT Public/Granted day:2013-03-28
Information query
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