一种齐纳二极管控制式轨对轨CMOS运算放大器  

Zener Diode Control Rail to Rail CMOS Operational Amplifier

作　　者：程梦璋[1] 景为平[1] 

机构地区：[1]南通大学江苏省专用集成电路重点实验室,江苏南通226007

出　　处：《电子器件》2007年第2期457-460,共4页Chinese Journal of Electron Devices

基　　金：江苏省"六大人才高峰"第二批项目资助"低噪声集成电路电压调节器"

摘　　要：采用0.6μm CMOS工艺,设计了一种齐纳二极管控制式轨对轨运算放大器.该运放采用了3.3V单电源供电,其输入共模范围和输出信号摆幅接近于地和电源电压,即所谓输入和输出电压范围轨对轨.该运放的小信号增益为82dB,单位增益带宽为12.34MHz,相位裕度为68°.由于电路简单,工作稳定,输入输出线性动态范围宽,非常适合于SOC芯片内集成.文中主要讨论该轨对轨运算放大器的原理,性能及设计方法,并进行了模拟仿真.A rail to rail operational amplifier is designed with 0.6 μm CMOS technology at 3.3 V single power supply.Its input common mode range and signal output range are close to ground and power supply,which is called rail to rail of input signal and output signal.The operational amplifiers have achieved DC gain of 82dB,unit gain bandwidth of 12.34 MHz,and phase margin of 68 degree.Since simple circuitry of the operational amplifier,stable working and wider input-output linear dynamic range,it is suitable to syste...

关 键 词：轨对轨 运算放大器 小信号增益 单位增益带宽 

分 类 号：TN722.77[电子电信—电路与系统]