沈阳工业大学学报2017，Vol.39Issue(6)：670-674,5.DOI:10.7688/j.issn.1000-1646.2017.06.13
全差分结构低功耗CMOS运算放大器设计
Design of low power CMOS operational amplifier with fully differential structure
摘要
Abstract
In order to reduce the influence of low supply voltage and short channel effect on the amplifier and obtain an amplifier with low voltage and high gain, a fully differential operational transconductance amplifier ( OTA) based on a 65 nm CMOS technology was proposed. A folded-cascode structure with a gain enhancement technology was adopted, which made the amplifier have a rail to rail input and large output swing characteristics and such advantages as high speed, high gain and low power. The circuit simulation results show that the DC gain is 82 dB, the gain bandwidth is 477 MHz and the phase margin is 59°. In addition, the settling time is 10 ns and the settling accuracy is 0. 05% under the normal process angle, while the power consumption is only 4. 8 mW.关键词
CMOS集成电路/增益增强/运算跨导放大器/高速/高增益/低功耗/折叠共源共栅结构/高增益带宽Key words
CMOS integrated circuit/gain enhancement/operational transconductance amplifier/high speed/high gain/low power/folded-cascode structure/high gain bandwidth分类
信息技术与安全科学引用本文复制引用
肖莹慧..全差分结构低功耗CMOS运算放大器设计[J].沈阳工业大学学报,2017,39(6):670-674,5.基金项目
中国博士后科学基金资助项目(2015T80797). （2015T80797）
