一种二阶曲率补偿的可调CMOS带隙基准源设计  

Design on a Second-order Compensation Tunable CMOS Bandgap Circuit

作　　者：李倩 苟冠鹏 陈慧宁 LI Qian;GOU Guanpeng;CHEN Huining(Chengdu CORPRO Technology Co.,Ltd.,Sichuan 610041,China)

机构地区：[1]成都振芯科技股份有限公司,四川610041

出　　处：《集成电路应用》2023年第5期8-10,共3页Application of IC

摘　　要：阐述采用0.18μm SiGe工艺的器件模型设计,在Spectre工具下进行仿真,3.3V供电在-40~+85℃温度范围内变化时,一阶温度补偿带隙基准电压的温度系数为12.8ppm/℃,经过二阶曲率补偿后该带隙基准电压的温度系数减小为0.8ppm/℃。通过在输出基准电压电路中增加一个接地电阻,可以实现对基准电压输出可调。This paper introduces that design uses 0.18μm SiGe process device model and simulates it under the Spectre tool.Under 3.3V Power supply,when the temperature changes in the range of-40℃to+85℃,the temperature coefficient of the first-order temperature compensation bandgap reference voltage is 12.8ppm/℃,after the second-order curvature compensation,the temperature coefficient of the reference voltage is reduced to 0.8ppm/℃.The refernce voltage output can be adjusted by adding a resistor connected to ground in the output reference voltage circuit.

关 键 词：带隙基准 二阶补偿 输出可调 温度系数 

分 类 号：TN0-4[电子电信—物理电子学]