宽温度范围高精度带隙基准电压源的设计

发布时间：2018-04-15 21:26

  本文选题：带隙基准 + 指数曲率补偿　； 参考：《固体电子学研究与进展》2016年01期

【摘要】：为了满足市场对宽温度范围、高精度带隙基准电压源的需求,本文设计制作了一种新型带隙基准电压电路。设计采用多点曲率补偿技术,在温度较低时采用指数频率补偿,高温时采用亚阈值指数曲率补偿。采用电压-电流转换器对分段补偿电流在输出端进行整合,进而在-55~150℃的温度范围内进行补偿,得到低温度系数的基准电压。设计的电路采用CSMC 0.5μm CMOS工艺验证,结果表明:5V电源电压下,输出1.25V的基准电压;在-55~150℃的温度范围内温度系数为2.5×10~(-6)/℃,在低频时,PSRR为-66dB。带隙基准电压源芯片面积为0.40mm×0.45mm。
[Abstract]:In order to meet the market demand for wide temperature range and high precision bandgap voltage reference, a new band-gap voltage reference circuit is designed and fabricated in this paper.The multi-point curvature compensation technique is used in the design, the exponential frequency compensation is used when the temperature is low, and the subthreshold exponential curvature compensation is used at high temperature.The voltage-current converter is used to integrate the piecewise compensation current in the output, and then the reference voltage with low temperature coefficient is obtained by compensating in the temperature range of -55 ~ 150 鈩，

本文编号：1755854