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| 一种分段温度补偿BiCMOS带隙基准源 | |
| 引用本文： | 丁大胜,徐世六,王永禄,汤洁,李思颖.一种分段温度补偿BiCMOS带隙基准源[J].微电子学,2012,42(3):340-343. |
| 作者姓名： | 丁大胜 徐世六 王永禄 汤洁 李思颖 |
| 作者单位： | 1. 重庆大学,重庆400044;模拟集成电路重点实验室,重庆400060 2. 模拟集成电路重点实验室,重庆,400060 3. 模拟集成电路重点实验室,重庆400060;重庆邮电大学,重庆400065 |
| 摘 要： | 设计了一种针对基准电压输出非线性的分段温度补偿电压基准源。该电路在基准源工作的低温和高温阶段对输出进行温度补偿,实现低温度系数。利用高增益的两级运算放大器以及增加PMOS管的栅长来提高电路的电源抑制比(PSRR)。在-55℃～125℃范围内,温度系数为2.9×10-6/℃,低频电源抑制比为-71dB。 |
| 关 键 词： | 带隙基准源 分段曲率补偿 温度系数 电源抑制比 |
A BiCMOS Bandgap Reference Based on Piecewise Temperature Curvature Compensation |
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| DING Dasheng , XU Shiliu , WANG Yonglu , TANG Jie , LI Siying.A BiCMOS Bandgap Reference Based on Piecewise Temperature Curvature Compensation[J].Microelectronics,2012,42(3):340-343. | |
| Authors: | DING Dasheng XU Shiliu WANG Yonglu TANG Jie LI Siying |
| Affiliation: | 2,3(1.Chongqing University,Chongqing 400044,P.R.China; 2.Science and Technology on Analog Integrated Circuit Laboratory,Chongqing 400060,P.R.China; 3.Chongqing University of Post and Telecommunications,Chongqing 400065,P.R.China) |
| Abstract: | A new piecewise curvature compensated voltage reference circuit was designed to solve the problem of non-linear output of bandgap reference.In this circuit,compensation was made at low and high operating temperatures,respectively,to achieve low temperature coefficient.A high gain 2-stage operational amplifier and PMOSFET with extended gate were used to improve PSRR.Simulation results showed that the circuit achieved a temperature coefficient of 2.9 ×10-6/℃ over the temperature range from-55 ℃ to 125 ℃,and a PSRR of-71 dB at low frequency. |
| Keywords: | Bandgap reference source Piecewise curvature compensation Temperature coefficient PSRR |
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