Title :
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
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 2nd -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; 2nd -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;
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
DOI :
10.1109/EDSSC.2007.4450282
