Design and Implementation of optimized Parameter Based Operational Amplifier for High Speed Analog Signal Processing

The most domineering device in the field of electronics is the Operational Amplifier owing to its widespread appliances via analog computation and signal processing. The major objective of this paper is to design and implement a two-stage complementary metal-oxide-semiconductor operational amplifier through precise specifications and also investigate the different outcomes concerning several parameters as well as process variations. The two-stage complementary metal-oxide-semiconductor Operational Amplifier operates under ±1.8V supply voltage and the simulation is performed through Cadence Virtuoso having 180nm technology. The important consideration throughout design of this Operational Amplifier circuit is its feasibility concerning the environment and appliance. Moreover, the feasibility of this circuit vastly depends upon the process variation, which brings about a significant impact over analog circuits in terms of quantifiable and foreseeable deviation of the output. Therefore, to determine the process variation as well as feasibility of the circuit, different simulations such as Monte-Carlo and Corner analysis have been performed for validation and specified gain of 60dB, phase margin of 58.7 degree and power dissipation of 302.55 microwatt have also been achieved.