  In this paper a CMOS two stage operational amplifier has been presented which
operates at 1.8 V power supply at 0.18 micron (i.e., 180 nm) technology and
whose input is depended on Bias Current. The op-amp provides a gain of 63dB and
a bandwidth of 140 kHz for a load of 1 pF. This op-amp has a Common Mode gain
of -25 dB, an output slew rate of 32 $V / \mu s$, and a output voltage swing.
The power consumption for the op-amp is $300\mu W$.
