A Low Power Wide Band-width CMOS Folded-cascode Amplifier
To solve the problem of traditional amplifiers that high unity-gain bandwidth is obtained in exchange of big-power, a low power wide band-width folded-cascode fully differential amplifier with cascode currentmirrors load is designed based on Smic0.18 um rf CMOs technology. Transitional capacitor and Miller capacitor are applied to enhance the stability of frequency-characteristic; Common-mode feedback circuit is added to stabilize the commonmode output voltage of differential structure; Test results show, with the power supply of 1.8V, the circuit has an open-loop gain of 76.07dB, a phase margin of 50.6, a unity-gain bandwidth of 215.7MHz and a CMRR of 120dB, while consuming 1.75mW of power.
Sun Jin Zhang Xiaolin
Schoole of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing, 100191, China
国际会议
International Conference on Space Information Technology 2009(2009年第三届空间信息技术国际会议)
北京
英文
1-7
2009-11-26（万方平台首次上网日期，不代表论文的发表时间）