Open AccessDesign and Optimization of a Low‐Noise Voltage Reference Using Chopper Stabilization Technique
Author(s) -
Peng Lingjie,
Jin Xiangliang,
Liu Mengliang
Publication year - 2017
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2017.03.020
Subject(s) - chopper , noise (video) , voltage , voltage reference , capacitive sensing , computer science , materials science , electronic engineering , control theory (sociology) , electrical engineering , acoustics , physics , engineering , control (management) , artificial intelligence , image (mathematics)
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 3Hz.