Design of A Low Voltage High PSRR Current-Mode Bandgap Voltage Reference
This paper describes an improved current-mode bandgap reference.By changing the proportion of current mirror in the traditional current-mode bandgap,the PSRR of the reference voltage is improved significantly.Both the traditional and the improved bandgap reference circuits are designed using 55nm CMOS process.The supply voltage is 1.2V,and the output reference voltage is 0.6V.Cadence post-simulation results show that the PSRR of traditional and improved current-mode bandgap reference are-63.7dB and-129.4dB at 10Hz,and the temperature coefficients are 10.4 ppm/℃and 19.5 ppm/℃in the temperature range of-40℃to 125℃,respectively.
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万方数据
维普
