一种新颖不带电阻的基准电压源电路设计  

Design of a Novel No-resistor Voltage Refrence Circuit

作　　者：谭炜锋[1] 刘辉华[1] 

机构地区：[1]电子科技大学电子科学技术研究院,四川成都610054

出　　处：《现代电子技术》2009年第14期188-190,共3页Modern Electronics Technique

摘　　要：基于标准SMIC 0.18μm CMOS工艺,设计一种低温漂、高精度基准电压源,该电压源是根据两个工作在饱和区的NMOS管的栅源电压差原理,产生一个与绝对温度成正比(PTAT)的电流,利用它对NMOS晶体管的阈值电压进行补偿,得到该电压源。此基准电压源电路仅使用NMOS和PMOS晶体管来实现。在-40^+80℃的温度变化范围内,它的温漂系数约为6.12 ppm/℃。Based on SMIC 0.18 μm CMOS,a low- temperature and high precision voltage reference is designed which can get a PTAT current by used two different NMOS Vgs which work in saturate. The current can be used to compensate the threshold voltage of NMOS,in order to get the voltage source. The CMOS voltage reference circuit is consisted of NMOS and PMOS transistors. Its average temperature coefficient is about 6.12 PPM/℃. The range of the temperature is from -40- ＋ 80 ℃.

关 键 词：PTAT电流 弱反型NMOS 二极管连接NMOS 阈值电压 基准电压 

分 类 号：TN710[电子电信—电路与系统]