A Low Voltage Low Power Wide Supply CMOS Current Mode Bandgap Voltage Reference

Abstract

We propose an efficient low voltage low power CMOS current mode bandgap voltage reference circuit for wide power supply range applications. The proposed circuit is designed in the SCL 180nm cmos process and provides a steady voltage reference of 500mV while running in the temperature range of -40°C to 125°C, as well as working normally with a large supply voltage range of 800mV to 10V. The traditional bandgap voltage reference circuit’s BJT is replaced by a MOSFET functioning in the subthreshold region, which is ideal for low voltage applications. When supplied with a 1V supply, the tempeature coefficient of the CMOS current mode bandgap reference is 85.08 ppm/°C, and an achieved line regulation is 0.13mV/V. While burning a current of 5.13μA the total power dissipation is 5.13μW and the PSRR is -105.54 dB at DC frequency.