Title :
A Ultra Low Supply Voltage Bandgap Reference Based on Substrate Bias
Author :
Peng, Yang ; Xiaobo, Wu ; Zhihao, Ye ; Yueming, Sun
Author_Institution :
Inst. of VLSI Design, Zhejiang Univ., Hangzhou, China
Abstract :
A CMOS bandgap reference (BGR) capable of operating at supply voltage of 0.9V was proposed in this paper. To guarantee its normal operation at ultra low supply voltage, the substrate bias techniques is used to reduce the threshold voltage. Meanwhile, an amplifier biased by subthreshold current is designed. This circuit is designed in tsmc 0.35μm CMOS technology. An average reference voltage of 658mV with a temperature coefficient of 18.5 ppm/°C is achieved.
Keywords :
CMOS analogue integrated circuits; amplifiers; low-power electronics; CMOS bandgap reference; TSMC CMOS technology; amplifier; size 0.35 mum; substrate bias; subthreshold current; threshold voltage; ultralow supply voltage bandgap reference; voltage 0.9 V; CMOS integrated circuits; Gain; MOSFETs; Photonic band gap; Substrates; Subthreshold current; bandgap reference; low voltage; substrate bias; subthreshold voltage;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6880-5
DOI :
10.1109/iCECE.2010.792
