Design of High Precision Bandgap Voltage Reference
Yiwei Wang · Modern Electronics Technique · 2010
A bandgap voltage reference circuit using 0.35 μm complementary CMOS process is presented.The circuit has high Power Supply Rejection Ratio(PSRR) and low-temperature coefficient.Simulation using HSpice based on the TSMC 0.35 μm CMOS process.The results show the temperature coefficient is 6.45 ppm/℃ between the temperature range of-25~+125 ℃ and the PSSR is the-101 dB.The bandgap output voltage Vref swing is 0.1 mV when the supply voltage is 2.5~4.5 V and the power consumption is only 0.815 mW.Therefore,it is an effective way to implement a bandgap voltage reference.