摘要
设计了一种带曲率补偿的电流模式基准电压源。采用CTAT电流补偿技术和高低温分段补偿技术,降低了基准电压的温度系数。采用斩波稳定技术和2阶低通滤波器,减小了失调电压和斩波引起的纹波。后仿真结果表明,在5 V电源电压、-40℃~150℃温度范围的条件下,基准电压源的温度系数为8.39×10-7/℃。Monte Carlo仿真结果表明,使用斩波稳定技术后,该基准电压源的3σ误差由原来的±0.904%降为±0.011%。
A current-mode voltage reference source with curvature compensation was designed.The temperature coefficient of the voltage reference was reduced by using CTAT current compensation technique and high-low temperature piecewise compensation technique.A chopper stabilization technique and second-order low-pass filters were used to reduce the offset voltage and the ripple effect caused by chopping.The post-simulation results showed that the temperature coefficient of the voltage reference was 8.39×10-7/℃over a wide temperature range of-40℃~150℃at 5 V supply voltage.Monte Carlo simulation results showed that the 3σerror of the voltage reference was reduced from±0.904%to±0.011%when using chopper stabilization technique.
作者
王娜
吴唐政
谢亮
金湘亮
WANG Na;WU Tangzheng;XIE Liang;JIN Xiangliang(School of Physics and Optoelectronics,Xiangtan University,Xiangtan,Hunan411105,P.R.China;Hunan Engineering Laboratory for Microelectronics,Optoelectronics and System on Chip,Xiangtan,Hunan411105,P.R.China;School of Physics and Electronics,Hunan Normal University,Changsha410081,P.R.China)
出处
《微电子学》
CAS
北大核心
2019年第3期341-345,共5页
Microelectronics
基金
国家自然科学基金资助项目(61774129,61827812)
关键词
基准电压源
曲率补偿
斩波稳定技术
voltage reference source
curvature compensation
chopper stabilization technique
