Title :
A chopper stabilized voltage reference using diode-connected MOS transistor
Author :
Jie, Lin ; Feiyan, Mu ; Lee, Wilson ; Guang, Tang
Author_Institution :
Long Xin Co. Ltd., Chengdu, China
Abstract :
A reference using diode-connected MOS transistor and incorporating chopper stabilization is proposed. Mutual compensation of mobility and threshold voltage temperature effects provides good temperature stability; chopper stabilization improves the initial accuracy and noise performance. The design is based on 0.35μm CMOS technology and is simulated using Cadence spectre software. The simulation results show that the reference voltage has a temperature coefficient of 5ppm/°C, over a operating temperature range of -55°C to 125°C, an initial accuracy of 0.023%, and a narrow-band root-mean square noise of 2.2μV (from 0.1Hz to 1kHz).
Keywords :
CMOS integrated circuits; MOSFET; choppers (circuits); integrated circuit noise; semiconductor diodes; CMOS technology; Cadence spectre software; chopper stabilized voltage reference; diode-connected MOS transistor; frequency 0.1 Hz to 1 kHz; mobility; narrow-band root-mean square noise; operating temperature; size 0.35 mum; temperature -55 degC to 125 degC; temperature stability; threshold voltage temperature effects; CMOS integrated circuits; CMOS technology; Choppers; MOSFETs; Mixers;
Conference_Titel :
Intelligent Signal Processing and Communication Systems (ISPACS), 2010 International Symposium on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-7369-4
DOI :
10.1109/ISPACS.2010.5704717
