Invention Grant
- Patent Title: Bandgap reference circuit and self-referenced regulator
- Patent Title (中): 带隙参考电路和自参考调节器
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Application No.: US14016132Application Date: 2013-09-01
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Publication No.: US09213349B2Publication Date: 2015-12-15
- Inventor: Min-Hung Hu , Chiu-Huang Huang , Chen-Tsung Wu
- Applicant: NOVATEK Microelectronics Corp.
- Applicant Address: TW Hsinchu Science Park, Hsin-Chu
- Assignee: NOVATEK Microelectronics Corp.
- Current Assignee: NOVATEK Microelectronics Corp.
- Current Assignee Address: TW Hsinchu Science Park, Hsin-Chu
- Agent Winston Hsu; Scott Margo
- Priority: TW101134414A 20120920
- Main IPC: G05F3/16
- IPC: G05F3/16 ; G05F3/20 ; G05F3/02 ; G05F3/30
Abstract:
The present invention discloses a bandgap reference circuit. The bandgap reference circuit includes an operational transconductance amplifier, and a reference generation circuit. The operational transconductance amplifier includes a self-biased operational transconductance amplifier, for utilizing an area difference between bipolar junction transistors of an input pair to generate a first positive temperature coefficient current to bias the input pair, and generating a positive temperature coefficient control voltage and a negative temperature coefficient control voltage; and a feedback voltage amplifier, for amplifying the negative temperature coefficient control voltage, and outputting a reference voltage to the input pair for feedback, to generate a first negative temperature coefficient current. The reference generation circuit generates a summation voltage or a summation current according to the positive temperature coefficient control voltage and the negative temperature coefficient control voltage.
Public/Granted literature
- US20140077789A1 Bandgap Reference Circuit and Self-Referenced Regulator Public/Granted day:2014-03-20
Information query
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