A high precision CMOS bandgap reference with second-order curvature-compensation

Author

Zhang, Chuan ; He, Shuzhuan ; Zhu, Ying ; Gao, Miglun

Author_Institution

Nanjing Univ., Nanjing

fYear

2007

fDate

22-25 Oct. 2007

Firstpage

553

Lastpage

556

Abstract

A high precision bandgap reference circuit with second-order curvature-compensation to improve the temperature coefficient in wider temperature range is presented in this paper. Simulation results with CSMC 0.6 mum 2P2M CMOS process model show that, the design features a reference voltage of 1.255 V at 25degC. The temperature coefficient is less than 5.29 ppm/degC at the range of -35-120 degC. With supply voltage variation of 2-5 V, the line-regulation ratio is 110 muV/V And PSRR is -81.54 dB. The active area of layout is 300 mum times 400 mum. Test results based on 20 samples show a good agreement with the simulation results.

Keywords

CMOS integrated circuits; low-power electronics; power supply circuits; CMOS bandgap reference; curvature compensation; low power dissipation; power supply noise rejection; size 0.6 mum; temperature 25 degC; voltage 1.255 V; Circuits; Helium; Laboratories; Operational amplifiers; Photonic band gap; Physics; Pulse width modulation; Temperature distribution; Very large scale integration; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC, 2007. ASICON '07. 7th International Conference on

Conference_Location

Guilin

Print_ISBN

978-1-4244-1132-0

Electronic_ISBN

978-1-4244-1132-0

Type

conf

DOI

10.1109/ICASIC.2007.4415690

Filename

4415690