一种轨对轨CMOS运算放大器的设计  

A Rail to Rail CMOS Operational Amplifier Design

作　　者：程梦璋[1] 

机构地区：[1]南通大学,江苏南通226007

出　　处：《微电子学与计算机》2007年第11期124-126,130,共4页Microelectronics & Computer

基　　金：南通市科技项目(k2006002);江苏省"六大人才高峰"第二批项目基金

摘　　要：基于0.6μmCMOS工艺,设计了一种轨对轨运算放大器。该运算放大器采用了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77dB,单位增益带宽为4.32MHz,相位裕度为79°。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。A rail to rail operational amplifier is designed with 0.6μm CMOS technology at 3.3V single power supply. It＇s input common mode range and signal output range are dose to ground and power supply, which is called rail to rail of input signal and output signal. The operational amplitiem have achieved DC gain of 77dB, unit gain bandwidth of 4.32MHz, and phase margin of 79°. Since simple circuitry of the operational amplifier, stable working and wider input- output linear dynamic range, it is suitable to system on chip.

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：TN402[电子电信—微电子学与固体电子学]