| 带曲率补偿的带隙基准电流源的设计 |
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| 引用本文： | 代赟,杨兴. 带曲率补偿的带隙基准电流源的设计[J]. 物联网技术, 2012, 0(2): 64-67 |
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| 作者姓名： | 代赟 杨兴 |
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| 作者单位： | 电子科技大学微电子与固体电子学院 |
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| 摘 要： | 简单介绍了带隙基准源的基本原理,给出了一款基于Widlar结构的带曲率补偿的带隙基准电压电流源的设计方法,通过采用TSMC0.5μm工艺库对电路进行仿真,在-40～150℃的温度范围内,其带隙基准的输出具有12ppm/℃的温度系数,电流基准的输出具有42ppm/℃。此外,文中还对曲率补偿电路的工作原理进行了分析,并且通过仿真波形对曲率补偿的工作机制进行了讨论。
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| 关 键 词： | Widlar结构 带隙基准 电流基准 曲率补偿 |
Band-gap current reference with curvature compensation |
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| DAI Yun, YANG Xing. Band-gap current reference with curvature compensation[J]. Internet of things technologies, 2012, 0(2): 64-67 |
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| Authors: | DAI Yun YANG Xing |
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| Affiliation: | (College of Micro-Electronics and Solid-state Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China) |
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| Abstract: | The principle of band-gap voltage reference is introduced. A design method of band-gap voltage reference and current reference with curvature compensation based on Widlar′s structure is proposed. The circuit is simulated with TSMC0.5 μm model, in the temperature extent of -40150 ℃, the output temperature coefficient of the band-gap voltage reference is 12 ppm/℃, the output temperature coefficient of the current voltage reference is 42 ppm/℃. The theory of curvature compensation circuit is analyzed and the working mechanism of curvature compensation circuit is discussed. |
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| Keywords: | Widlar structure band-gap voltage reference current reference curvature compensation |
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