中国半导体行业协会封装分会会刊

中国电子学会电子制造与封装技术分会会刊

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电子与封装 ›› 2016, Vol. 16 ›› Issue (11): 18 -22. doi: 10.16257/j.cnki.1681-1070.2016.0126

• 电路设计 • 上一篇    下一篇

一种带有失调消除电路的带隙基准设计

许圣全1,2,张 帅2   

  1. 1. 西安电子科技大学,西安 710071;2. 中国电子科技集团公司第32研究所,上海 200233
  • 出版日期:2016-11-20 发布日期:2016-11-20
  • 作者简介:许圣全(1981—),男,江苏南通人,硕士学历,中国电子科技集团公司第32研究所自主可控研究院工程师,主要研究方向为数模混合集成电路设计。

A Design of Bandgap Voltage Reference Circuit with Offset Voltage Elimination Function

XU Shengquan1,2, ZHANG Shuai2   

  1. 1. Xidian University,Xi’an 710071, China; 2. China Electronics Technology Group Corporation No.32 Research Institute, Shanghai 200233, China
  • Online:2016-11-20 Published:2016-11-20

摘要: 设计一种带有消除失调电压的带隙基准源。采用NEC的0.35μm 2P2M标准CMOS工艺,在Cadence Spectre环境下进行设计和仿真。该电路比传统的带隙基准电路具有更高的精度和稳定性。带隙基准的输出电压为1.274 V,在3~6 V的电源电压范围内基准电压随输入电压的最大偏移为0.4 m V;在-55~125℃的温度范围内,基准电压随温度的变化为4 m V,产生的偏置电流基本上不受电源电压的影响,而与温度成线性关系。该电路以增加芯片功耗和面积为代价,消除失调电压对电路的影响。基准电压电源抑制比可达到85 d B。

关键词: 带隙基准, 失调电压, 电源抑制比, 温度系数, CMOS

Abstract: The paper presents a design of a bandgap voltage reference with offset voltage elimination function. The circuit is of NEC 0.35μm 2P2M standard CMOS and is designed and simulated in Cadence Spectre environment. The bandgap voltage reference is of higher precision and stability. The output of the bandgap voltage is 1.274 V, the greatest skew of reference voltage to input is 0.4 mV in the power supply ranging from 3 V to 6 V. The greatest skew of reference voltage to temperature is about 4 mV in the range of -55 ℃ to 125 ℃ and the reference current, hardly influenced by the power supply voltage, is in linear correlation with the temperature. The circuit sacrifices the power consumption and size to eliminate the impact of offset voltage on the circuit. The bandgap reference has a higher PSRR which is up to 85 dB.

Key words: bandgap voltage reference, offset voltage, PSRR, temperature coefficient, CMOS

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