现代电子技术Issue(2)：128-131,4.
一种应用于ADC带曲率补偿的高精度带隙基准源
A high-accuracy bandgap reference source used for curvature compensation of ADC
朱晓宇 1居水荣1
作者信息
- 1. 江南大学 物联网工程学院，江苏 无锡 214122
- 折叠
摘要
Abstract
A high⁃accuracy bandgap reference source used for curvature compensation of 1.8 V pipeline ADC was designed. Different from traditional current⁃mode bandgap reference source,the curvature compensation technology was adopted in this bandgap reference source,which reduced low temperature coefficient and improved precision. The methods to improve PSRR are analyzed in this paper. A folded cascode amplifier with the bias of high⁃swing cascode current mirrors was designed,which im⁃proved PSRR of bandgap reference source. Based on the CSMC 0.18 μm CMOS process,the bandgap reference gains an output voltage of 900 mV. Simulation results indicate that the circuit can start up normally,the temperature coefficient is 3 ppm/℃ be⁃tween -40 ℃ and 125 ℃ and the PSRR is 89 dB at low frequency.关键词
带隙基准源/曲率补偿/电压抑制比/模/数转换器Key words
bandgap reference/curvature compensation/PSRR/ADC分类
信息技术与安全科学引用本文复制引用
朱晓宇,居水荣..一种应用于ADC带曲率补偿的高精度带隙基准源[J].现代电子技术,2015,(2):128-131,4.
