一种新型高精度曲率补偿的带隙基准源
发布时间：2018-01-16 19:18
本文关键词：一种新型高精度曲率补偿的带隙基准源 出处：《微电子学》2017年02期 论文类型：期刊论文
【摘要】：采用2个双端差分输入放大器(DDIA),设计了一种新型高精度曲率补偿的带隙基准源。其中一个DDIA产生PTAT电流,得到1阶补偿的基准电压,另一个DDIA产生与温度非线性相关的补偿电压,对基准电压的温度曲线进行曲率补偿,得到高阶温度补偿的参考电压。该电路基于SMIC 0.18μm标准CMOS工艺,仿真结果表明:在3.3V电源电压下,基准输出电压为1.171 9V;在-40℃~125℃的温度范围内,温度系数为1.48×10~(-6)/℃;低频率时,电源抑制比(PSRR)为-66dB。电源电压在2.5~4V范围内,线性调整率为0.6mV/V。
[Abstract]:A new bandgap reference source with high precision curvature compensation is designed by using two two-terminal differential input amplifiers. One of the DDIA generates PTAT current and obtains the first order compensated reference voltage. Another DDIA generates compensation voltage related to temperature nonlinearity, which compensates the temperature curve of reference voltage by curvature compensation. The reference voltage of high-order temperature compensation is obtained. The circuit is based on SMIC 0.18 渭 m standard CMOS process. The simulation results show that the circuit is based on 3.3V supply voltage. The reference output voltage is 1.171 9 V; In the temperature range of -40 鈩，
本文编号：1434454
本文链接：https://www.wllwen.com/kejilunwen/dianzigongchenglunwen/1434454.html
