一种增益提升高速CMOS运算跨导放大器的设计  

A Design Of High-Speed And Gain-Boosted CMOS Operational Transconductance Amplifier

作　　者：刘睿强[1] 景新幸[1] 张祥祯[1] 

机构地区：[1]桂林电子科技大学信息与通信学院ASIC研究室

出　　处：《中国集成电路》2007年第4期39-42,共4页China lntegrated Circuit

摘　　要：设计了用于高速高分辨率ADC的CMOS全差分运算放大器,采用套筒式级联增益自举电路,达到高增益带宽且低功耗。在3.3V电源电压下,用TSMC0.35μmCMOS工艺模型,通过Cadence软件Spectre仿真平台,驱动1PF负载时,相位裕度为65度,单位增益带宽为316MHz,功耗5.7mW,压摆率200V/μs。The paper designs a cmos fully-differential operational amplifier of high-speed and high-resolving ADC, with gain-boosted telescopic cascode to get high unity gain bandwidth. With the 3.3 V power supply and in TSMC 0.35um CMOS mode achieved the dc open-loop gain of 110 dB with 315 MHz unity gain bandwidth ,2V output swing ,10mW power consumption and 65 phase margin though the Spectre simulator of Cadence software.

关 键 词：CMOS套筒式共源共栅运算放大器 增益提升 共模反馈 模型参数提取 

分 类 号：TN722[电子电信—电路与系统]