Study and Performance Analysis of High Frequency and High Speed Operational Amplifier
The performance analysis of the two stage CMOS operational amplifiers employing Miller capacitor in conjunction with the common gate current buffer is presented. Unlike the previously reported design strategies of the opamp of this type, this results in the opamp with a lower power supply requirements, better phase margin and better speed. The Opamp is designed to exhibit a unity gain frequency of 1.46GHz and exhibits a gain of 115dB with an 117?? phase margin. The slew rate is found as high as 50 V/?s. Power supply noise rejection is also better in case of current buffer compensation.