Design of a Bandgap Voltage Reference Based a Current Mirror with Curvature-Compensated
Chaodong Ling · Journal of Huaqiao University · 2010
To improve the temperature coefficient,adjusting rate of voltage and power supply rejection ratio of bandgap voltage reference,a novel circuit using the current-replication technique is designed in 0.6 μm CMOS process.The presented circuit is simple,and has good performance on startup.Furthermore,this circuit can work well in a wide temperature range and exhibits good flexibility and stability output of voltage.All these features are satisfied the requirement of analog integrated circuit.The simulation results show that the temperature coefficient is 1.632×10-5 ℃-1 with temperature changed from-50 ℃ to +195 ℃,the power supply rejection ratio can achieve-70 dB,and the adjusting rate of voltage is 4.0×10-4 with the supply voltage in the rage of 4.5~6.5 V.All these results are obtained at three different process corners(TT,FF,SS).