一种基于JFET差分输入对的电压基准源设计  

Design of a voltage reference based on JFET differential input pair

作　　者：李飞[1] 陈娜 LI Fei;CHEN Na(China Electronic Technology Conglomeration No.58 R&.D Institute,Wuxi 214035,China;.2 Chongqing Academy of Metrology and Quality Inspection,Chongqing 401123,China)

机构地区：[1]中国电子科技集团公司第五十八研究所,江苏无锡214035 [2]重庆市计量质量检测研究院,重庆401123

出　　处：《微电子学与计算机》2020年第4期80-85,共6页Microelectronics & Computer

摘　　要：采用4μm 40 V BJT商用工艺设计了一种基于JFET差分输入对的2.5 V电压基准源.内部结构包括JFET差分输入对、恒流源、PTAT电流源、运放、电阻分压器、短路保护.仿真结果表明本设计能够满足5 V^30 V宽电压范围、车规级温度范围应用,并具有低噪声、低温漂、低温度非线性等卓越性能.Fabricated by 4μm 40 V BJT commercial technology,a designed voltage reference based on JFET differential input pair outputs 2.5 V steadily,which is comprised of JFET differential input pair,constant current source,PTAT current source,op-amp,resistor divider,short-circuited protection.Simulation results show that the design lends itself well to a wide range of voltage application(5 V^30 V)and vehicle-level temperature application.Besides,low noise,low temperature drift,low temperature nonlinearity could also be expected.

关 键 词：JFET差分输入对 低噪声 低温漂 低温度非线性 

分 类 号：TN432[电子电信—微电子学与固体电子学]