Invention Grant
US09459647B2 Bandgap reference circuit and bandgap reference current source with two operational amplifiers for generating zero temperature correlated current
有权
带隙参考电路和带隙参考电流源，带有两个用于产生零温度相关电流的运算放大器
- Patent Title: Bandgap reference circuit and bandgap reference current source with two operational amplifiers for generating zero temperature correlated current
- Patent Title (中): 带隙参考电路和带隙参考电流源，带有两个用于产生零温度相关电流的运算放大器
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Application No.: US13155392Application Date: 2011-06-08
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Publication No.: US09459647B2Publication Date: 2016-10-04
- Inventor: Min-Hung Hu , Zhen-Guo Ding , Chen-Tsung Wu
- Applicant: Min-Hung Hu , Zhen-Guo Ding , Chen-Tsung Wu
- Applicant Address: TW Hsin-Chu
- Assignee: NOVATEK Microelectronics Corp.
- Current Assignee: NOVATEK Microelectronics Corp.
- Current Assignee Address: TW Hsin-Chu
- Agent Winston Hsu; Scott Margo
- Priority: TW099127556A 20100818
- Main IPC: G05F3/30
- IPC: G05F3/30 ; H02M1/44 ; H02M1/00 ; H02M3/156
Abstract:
The present invention provides a bandgap reference circuit. The bandgap reference circuit includes a first bipolar junction transistor, a first resistor, for generating a proportional to absolute temperature current, a second resistor, for generating a complementary to absolute temperature current, a first operational amplifier, coupled with the first bipolar junction transistor and the first resistor, a second operational amplifier, coupled with the first bipolar junction transistor and the second resistor, and a zero temperature correlated current generator, for summing the proportional to absolute temperature current and the complementary to absolute temperature current, to generate a zero temperature correlated current.
Public/Granted literature
- US20120043955A1 Bandgap Reference Circuit and Bandgap Reference Current Source Public/Granted day:2012-02-23
Information query
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