Design of a High Accuracy CMOS Voltage Reference with Low Cost

In this paper a non-bandgap voltage reference was designed in a standard 0.13μm CMOS technology,based on element that electron mobility and threshold voltage have opposite temperature coefficients. The simulation results using by Hspice show that the output of proposed voltage reference is 0.715V and it can be adjusted from 0.4V to 1V. Within the temperature range from -25 ℃ to 125 ℃,a temperature coefficient of 21.6 ppm/ ℃ is achieved,and the line regulation at 25 ℃ is 0.237%/V.