Title :
A curvature-compensated bandgap reference with high PSR
Author :
Yu, Jian ; Zhao, Yuanfu ; Wang, Zongmin ; Zhang, Tieliang
Author_Institution :
Beijing Microelectron. Technol. Inst., Beijing
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;
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
DOI :
10.1109/GRC.2008.4664747
