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一种宽温度范围低温度系数的CMOS带隙基准电路

更新时间:2020-10-27 23:04:54 大小:3M 上传用户:zhengdai查看TA发布的资源 标签:CMOS 下载积分:1分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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为得到适用于温度传感器、AD/DA和LDO等精密系统的高精度基准电压,提出基于高阶非线性补偿的5段分段补偿技术,在-40~125℃的宽温度范围内,实现一种高精度带隙基准(BGR)电路.5段分段补偿技术基于电流镜组合构成的电流加减电路实现.BGR电路基于3.3 V电源供电的0.18μm CMOS工艺完成设计.仿真结果表明,所设计BGR电路的温度系数(TC)为0.05×10^-6/℃,工作电流约为28μA,电源抑制比(PSRR)约为-100dB@dc,线性调整率约为11.8μV/V.

In order to obtain the high-precision reference voltage suitable for precision systems,such as temperature sensors,AD/DA,LDO,a high-precision bandgap reference(BGR)circuit is proposed with an innovative 5-segment piecewise compensation method based on high-order nonlinear compensation over a wide temperature range of-40 to 125℃.The 5-segment piecewise compensation method is implemented based on the current addition and subtraction circuits designed by the combi-nation of current mirrors.The BGR circuit is designed in 0.18μm CMOS process with 3.3 V voltage supply.The simulation results show that the 5-segment piecewise compensation optimizes the temperature coefficient(TC)of BGR to 0.05×10^-6/℃.The operating current is about 28μA,the power supply rejection ratio(PSRR)is about-100 dB@dc and the linearity is about 11.8μV/V.

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一种宽温度范围低温度系数的CMOS带隙基准电路.pdf 3M

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