An Improved CMOS Bandgap Reference with Self-biased Cascoded Current Mirrors

Author

Wu, Wen ; Zhiping, Wen ; Yongxue, Zhang

Author_Institution

Beijing Microelectron. Tech. Instn., Beijing

fYear

2007

fDate

20-22 Dec. 2007

Firstpage

945

Lastpage

948

Abstract

In this paper, an improved cascoding CMOS bandgap reference(BGR) without opamp is presented. By incorporating a simple feedback transistor and several resistors into conventional cascoding circuit, the power-supply rejection and 2^nd -order curvature compensation circuit is formed. With Spectre tool and 0.35 mum CMOS model, the simulation has been carried out and the results show that the PSRR and temperature performance are both improved evidently. PSRR of the improved BGR is 93dB at DC and TC is 7ppm/degC over the temperature range of -40~+125degC.

Keywords

CMOS integrated circuits; cascade networks; current mirrors; reference circuits; 2^nd -order curvature compensation circuit; CMOS bandgap reference; Spectre tool; feedback transistor; power-supply rejection; resistors; self-biased cascoded current mirrors; size 0.35 mum; Feedback circuits; Feedback loop; Force measurement; Microelectronics; Mirrors; Photonic band gap; Resistors; Temperature dependence; Temperature sensors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices and Solid-State Circuits, 2007. EDSSC 2007. IEEE Conference on

Conference_Location

Tainan

Print_ISBN

978-1-4244-0637-1

Electronic_ISBN

978-1-4244-0637-1

Type

conf

DOI

10.1109/EDSSC.2007.4450282

Filename

4450282