设计一种采用电流模式和Buck’s电压转移单元对VBE进行高阶补偿的带隙基准电压源。电路采用CSMC0.5μm DPTM CMOS工艺制造。温度在-40~125℃之间变化时,基准电压源的温度系数为3.15ppm/℃,在3.5~5.0V之间的电压调整率为0.35mV/V。
A bandgap reference, which utilizes current - mode and a Buck's voltage transfer cell to provide a high order compensation of the VBE. This circuit achieves 3. 15 ppm/℃ of temperature coefficient with temperature ranging is -40- 125 ℃ ,and an average line regulation of 0. 35 mV/V is 3.5-5.0 V.