Design and Optimization of a Low-Noise Voltage Reference Using Chopper Stabilization Technique  

作　　者：PENG Lingjie JIN Xiangliang LIU Mengliang 

机构地区：[1]School of Physics and Optoelectronics,Xiangtan University,Xiangtan 411105,China [2]Hunan Engineering Laboratory for Microelectronics,Optoelectronics and System on a Chip,Xiangtan 411105,China

出　　处：《Chinese Journal of Electronics》2017年第5期981-985,共5页电子学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61274043,No.61233010);Hunan Provincial Natural Science Fund for Distinguished Young Scholars(No.2015JJ1014)

摘　　要：A low-noise voltage reference is presented to enhance resolution of MEMS capacitive accelerometer and reduce system noise,in which the circuit uses Chopper stabilization(CHS) technique for the suppression of low-frequency noise.A 3.7V voltage reference chip is fabricated in a 0.5-μm CMOS process.Compared with the voltage reference without using CHS,the proposed design is much more superior in low-noise performance.Experimental results indicate that the output noise of reference voltage V RP can reach 0.121μV/sqrt(Hz) at the vicinity of 3 Hz.A low-noise voltage reference is presented to enhance resolution of MEMS capacitive accelerometer and reduce system noise,in which the circuit uses Chopper stabilization（CHS） technique for the suppression of low-frequency noise.A 3.7V voltage reference chip is fabricated in a 0.5-μm CMOS process.Compared with the voltage reference without using CHS,the proposed design is much more superior in low-noise performance.Experimental results indicate that the output noise of reference voltage V RP can reach 0.121μV/sqrt（Hz） at the vicinity of 3 Hz.

关 键 词：Voltage reference Low noise Chopper stabilization AMPLIFIER 

分 类 号：TN432[电子电信—微电子学与固体电子学]