A curvature-compensated bandgap reference with high PSR

Author

Yu, Jian ; Zhao, Yuanfu ; Wang, Zongmin ; Zhang, Tieliang

Author_Institution

Beijing Microelectron. Technol. Inst., Beijing

fYear

2008

fDate

26-28 Aug. 2008

Firstpage

752

Lastpage

755

Abstract

In this paper, a curvature-compensated current mode bandgap reference with high supply rejection(PSR) is presented, which is in a 0.5 um 2P2M n-well mixed signal CMOS technology. Several resistors are added to improve temperature coefficient(TC). Otherwise the supply noise is directly fed into the feedback loop of the bandgap circuit by utilizing a simple voltage subtractor circuit. The simulation results have been shown to conform well with the theoretical evaluation. This circuit achieves 7 ppm/degC of temperature coefficient with temperature ranging from -40~125degC and 106 dB of PSRR at DC, respectively.

Keywords

CMOS analogue integrated circuits; CMOS digital integrated circuits; current-mode circuits; energy gap; integrated circuit noise; mixed analogue-digital integrated circuits; reference circuits; PSR; curvature-compensated current mode bandgap reference; feedback loop; high power supply rejection; mixed signal CMOS technology; resistor; temperature coefficient; voltage subtractor circuit; Analog-digital conversion; CMOS technology; Circuit noise; Feedback circuits; Feedback loop; Microelectronics; Operational amplifiers; Photonic band gap; Temperature distribution; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Granular Computing, 2008. GrC 2008. IEEE International Conference on

Conference_Location

Hangzhou

Print_ISBN

978-1-4244-2512-9

Electronic_ISBN

978-1-4244-2513-6

Type

conf

DOI

10.1109/GRC.2008.4664747

Filename

4664747