高精度轨对轨CMOS峰值检测电路设计  

High-precision rail-to-rail CMOS peak detector circuit design

作　　者：王开贤[1] 邬齐荣[1] 高鑫[1] 李美光[1] 汤恩松 Kai-Xian Qi-Rong Mei-Guang En-Song 

机构地区：[1]四川大学物理科学与技术学院微电子技术四川省重点实验室,成都610064

出　　处：《四川大学学报（自然科学版）》2009年第6期1702-1708,共7页Journal of Sichuan University(Natural Science Edition)

基　　金：四川大学首届“大学生创新性实验计划”基金项目重点项目[2007]

摘　　要：设计一种高精度轨对轨CMOS峰值检测电路.基于信号"先缩小后放大",在MOS采样开关管控制下电源对存储电容充电,该电路实现了轨对轨峰值检测,降低了检测电路的工作电流,提高了MOS开关管的速度和峰值检测的精度.该电路设计基于CSMC0.5μm CMOS工艺,采用了5 V单电源,检测精度小于1 mV,检测电压范围为0～5 V,整个检测电路的静态电流消耗为2 mA,正常工作频率为0.1 Hz～10 KHz.A high-precision rail-to-rail CMOS peak detector circuit is designed .Based on that the signal is zooming out and in,and that the power supply can charge the storage capacitance under the control by MOS sample switch,the circuit could achieve rail-to-rail peak detector,lower the working current of the detection circuit,and improve the velocity of MOS switch and the precision of peak detector .The circuit design is based upon CSMC 0.5 μm CMOS technology,using 5 V single power supply .The detection precision is less than 1 mV,the range of detection voltage is 0～5 V,the static current dissipation is 2 mA,and the normal working frequency is 0.1 Hz～10 KHz.

关 键 词：高精度 轨对轨 CMOS technology 峰值检测 电路设计 circuit design detection 检测电路 RAIL-TO-RAIL power supply 开关管 velocity of Based 静态电流 检测精度 工作频率 工作电流 单电源 电压范围 电容充电 

分 类 号：N55[自然科学总论]