An op amp-less band-gap voltage reference with high PSRR and low voltage

Author

Min, Xu ; Wei-Ming, Yang ; Wu-Tao, Yang ; Jing, Zou ; Yi-Chuan, Zhou

Author_Institution

Sch. of Phys. & Electron. Technol., Hubei Univ., Wuhan, China

fYear

2010

fDate

22-24 Sept. 2010

Firstpage

166

Lastpage

169

Abstract

With the trend of low-power, low-voltage in IC design, conventional band-gap voltage reference will not be the most suitable candidate anymore. In this paper, an op amp-less band-gap voltage reference is designed in 0.35um 5V/3.3V CMOS process. After the principle and stability of the voltage reference is introduced, the power supply noise rejection ratio (PSRR) and temperature coefficient in low voltage supply are analyzed too. The simulation results indicate that the temperature range is -40 to 125, the reference voltage is 1.166V - 1.171V and the PSRR is 104dB at 1KHz when the supply voltage range is 2.5V ± 10% So the proposed op amp-less band-gap reference has the features of high-PSRR, low-voltage and low temperature coefficient. It is very suitable to be applied in low voltage ADC and DAC.

Keywords

CMOS analogue integrated circuits; energy gap; reference circuits; CMOS process; frequency 1 kHz; low voltage ADC; low voltage DAC; op amp-less band-gap voltage reference; power supply noise rejection ratio; size 0.35 mum; temperature coefficient; voltage 1.166 V to 1171 V; Circuit stability; Low voltage; Negative feedback; Operational amplifiers; Photonic band gap; Resistance; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Microelectronics and Electronics (PrimeAsia), 2010 Asia Pacific Conference on Postgraduate Research in

Conference_Location

Shanghai

Print_ISBN

978-1-4244-6735-8

Electronic_ISBN

978-1-4244-6736-5

Type

conf

DOI

10.1109/PRIMEASIA.2010.5604934

Filename

5604934