Design of High Precision Bandgap Voltage Reference with Chopped Modulator

YANG Xiao-chun; YU Qi; SONG Wen-qing; DONG Zhu-xiang; ZHENG Zhi-wei

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Design of High Precision Bandgap Voltage Reference with Chopped Modulator

更新时间：2026-09-04

- Design of High Precision Bandgap Voltage Reference with Chopped Modulator
- Vol. 30, Issue 1, Pages: 86-89(2013)
- 作者机构：
  
  电子科技大学电子薄膜与集成器件国家重点实验室机构,四川,成都,610054
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
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杨晓春, 于奇, 宋文青, 董铸祥, 郑志威. 一种采用斩波调制的高精度带隙基准源的设计[J]. 微电子学与计算机, 2013, 30(1): 86-89.

YANG Xiao-chun, YU Qi, SONG Wen-qing, et al. Design of High Precision Bandgap Voltage Reference with Chopped Modulator[J]. 2013, 30(1): 86-89.
杨晓春, 于奇, 宋文青, 董铸祥, 郑志威. 一种采用斩波调制的高精度带隙基准源的设计[J]. 微电子学与计算机, 2013, 30(1): 86-89. DOI：

YANG Xiao-chun, YU Qi, SONG Wen-qing, et al. Design of High Precision Bandgap Voltage Reference with Chopped Modulator[J]. 2013, 30(1): 86-89. DOI：

摘要

为了抑制运算放大器的输入失调电压对带隙基准源的影响

提高输出电压的精度

基于斩波调制技术

设计了一种高精度带隙基准源电路.通过0.25m BiCMOS工艺模型仿真验证

结果表明

运算放大器的差分输入对管的失配为±2%时

该基准源的输出电压波动峰峰值为0.38mV

与传统带隙基准源相比

相对精度提高了113倍.当电源电压在2.5~6.0V内

基准电压源的波动小于0.085mV

温度为-40~125℃时

电路的温度系数为19ppm/℃.

Abstract

A high precision bandgap voltage reference with chopped modulator is presented in this paper.The chopper modulator is used to compensate the Random error caused by the offset of the opamp and improve the accuracy of the bandgap refrence.In the 0.25 m BiCMOS models

Resultsfrom simulation showed that

Considering ±2% mismatch of input pairs respectively

the peak-to-peak value of the output ripple is 0.38 mV.The relative accuracy is increased by 113 times compared with the traditional bandgap voltage reference.With supply voltage range from 2.5 V to 6.0 V

the variation of the output is approximately 0.085 mV.In the temperature range from -40℃ to 125℃

the bandgap voltage reference had a temperature coefficient of 19 ppm/℃.

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Related Institution

Department of Electronic Science and Technology, University of Science and Technology of China

College of Physics, Liaoning University

IC & Electronics System Design Lab.of Liaoning Province, Liaoning University

1 College of Electronic Science and Enginering, Nanjing University of Posts and Telecommunications

2 Nanjing Micro One Electronics Inc., Nanjing

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