低压低耗宽带CMOS电流反馈运放仿真设计  

Simulation of Low-Voltage Low-Consumption and Wide-Band CMOS Current Feedback Operational Amplifier

作　　者：张静[1] 成立[1] 倪雪梅[1] 张雷[1] 周洋[1] 王振宇[1] 

机构地区：[1]江苏大学电气与信息工程学院,江苏镇江212013

出　　处：《半导体技术》2009年第9期895-898,共4页Semiconductor Technology

基　　金：国家"863"计划引导项目(2006AA10Z258)

摘　　要：设计了一种低压、宽带CMOS电流反馈运算放大器(CFOA),它可以实现轨到轨的输入/输出,同时具有较大的电流驱动能力。采用0.25μm CMOS工艺参数,对所设计的CFOA进行了PSPICE仿真,结果表明,该CFOA可工作在±0.75V的电源电压、304μA的总待机电流下,电路的通频带宽度为120MHz,输出驱动电流为±1mA,因而可用于低压、较大驱动电流的应用场合。A low-voltage, wide-band CMOS current feedback operational amplifier （CFOA） was presented. The realization nearly allows rail-to-rail input/output operation. Also it can provide large-drivecurrent. The CFOA is simulated by 0.25 μm CMOS technology and the results show that it can operates at supply voltages of ±0.75 V with a total standby current of 304 μA, and it exhibits a bandwidth of 120 MHz and a drive current of ±1mA. The CFOA is suitable for low-voltage and large-drive-current systems.

关 键 词：电流反馈运算放大器 低压 可变增益放大器 CMOS器件 

分 类 号：TN722[电子电信—电路与系统]