High gain CMOS telescopic operational amplifier with common-mode feedback
Mingyan Yu · Ha'erbin gongye daxue xuebao · 2006
A two-stage telescopic operational amplifier with common-mode feedback structure is presented,which is supplied by a single 5 V power.The smart input common-mode feedback structure of the telescopic stage stabilizes the output common-mode voltage at almost 2.5 V.At last,the gain of amplifier is over 110 dB and phase margin is 50°,and the gain bandwidth is 60.83 MHz.