Abstract

In this paper the performance evaluation of operational amplifier (Opamp) is carried out in reference to the advantages of high supply rejection in 0.18µm CMOS (complementary metal oxide semiconductor) technology. This evaluation is carried out with Miller Compensation. This process involves nine step procedure in which various parameter such as transconductance, W/L ratio, beta, various current is evaluated. This process is carried out in SPICE platform using Tanner EDA tool. Miller compensation technique is used because with it a reduction in the compensation capacitor size is observed. It further reduces design area and improves the phase margin from the left hand plane zero.

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