High PSRR and high-order curvature-compensated bandgap voltage reference

Author

Yu, Qi ; Zhang, Wan-Dong ; Chen, Hong ; Ning, Ning ; Deng, Chun-Jian

Author_Institution

State Key Lab. of Elec. Thin Films & Integrated Devices, Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2010

fDate

22-24 Sept. 2010

Firstpage

154

Lastpage

157

Abstract

Based on the principle of piecewise compensation, a new high-order curvature compensated method of bandgap reference is presented in this paper. This method focuses on forming multiple local extrema of the curve of reference voltage instead of single valley or peak in the entire operating temperature range, which improves the temperature independence significantly. It has a temperature coefficient in the -40°C to 135°C range of 0.58 ppm/°C simulated in 0.5 μm CMOS process. Adopting the error amplifier with improved PSRR, the PSRR is -95.4dB at dc and -56dB at 100KHz with 5V power supply.

Keywords

CMOS integrated circuits; circuit simulation; compensation; integrated circuit modelling; power supply circuits; reference circuits; CMOS process; PSRR; error amplifier; frequency 100 kHz; high-order curvature-compensated bandgap voltage reference; multiple local extrema; operating temperature range; piecewise compensation principle; power supply rejection ratio; reference voltage; size 0.5 mum; temperature -40 degC to 135 degC; temperature coefficient; temperature independence; voltage 5 V; Manganese; Photonic band gap; Resistors; Temperature distribution; Temperature measurement; Transistors;

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.2010.5604939

Filename

5604939