低压低功耗电流反馈运算放大器设计  

Design of Current Feedback Operational Amplifier with Low Voltage and Low Power

作　　者：王丽娜[1] 陈向东[1] 李沁莲[1] 梁建[1] 

机构地区：[1]西南交通大学信息科学与技术学院,微电子与固体电子研究所,四川成都610031

出　　处：《微电子学与计算机》2011年第6期193-196,共4页Microelectronics & Computer

摘　　要：基于第三代电流传输器,通过在放大级与输出之间采用隔离补偿电容,以消除低频零点的方式,设计了一种新型的低压低功耗的电流反馈运算放大器.基于TMSC 0.35μmCMOS工艺,在1.5 V电源电压工作条件下,采用Hspice在LEVEL49模型参数下对整个电路进行仿真.仿真结果:直流增益96.3 dB,单位增益带宽765 MHz,静态功耗0.82 mW,闭环工作状态下有64.3 MHz的固定带宽.Based on third-generation current conveyor,through the use of compensation capacitor isolation between the output and the amplification,the way is to eliminate the low frequency zero,we designed a new current feedback operational amplifiers with low-voltage and low power consumpution.Based on TMSC 0.35 μm CMOS process,the 1.5 V power supply voltage conditions,using Hspice in LEVEL49 model parameters to simulate the entire circuit.Simulation results： DC gain of 96.3 dB,unity gain bandwidth of 765 MHz,static power consumption 0.82 mW,the state closed loop bandwidth is fixed under the 64.3 MHz.

关 键 词：高增益带宽 电流反馈运算放大器 固定带宽 

分 类 号：TN432[电子电信—微电子学与固体电子学]