Due to the problem associated with device power dissipation, the demand for low power devices is increasing at a faster rate as a result of wider implementation of smaller-sized, portable, and hand held devices in the telecommunication and entertainment industries. This research study is a comparative study which emphasizes on the design and analysis of the parameters of two stage CMOS op-amp technologies in order to get high slew rate and DC open loop gain. We have designed and compared some of the important performance parameters of the two stage CMOS op-amp, which operates at 2.0V power supply using L = 0.5 m CMOS technologies. The simulations were done using OrCAD PSPICE software and we have found that the design high slew rate: -61.98V s, 67.98V s and high DC open loop gain of 95.287dB, widest UGB and PM of 11.4233MHz and 84.7437 , respectively. Thus, this design will be of highly capable candidate for portable and hand-held CMOS op amp devices. o