Affiliation:
1. JNTU-GV, College of Engineering
Abstract
In this paper a low offset voltage; low power and high gain second stage op-amp of differential amplifier along with common source amplifier with compensated capacitor is proposed. The mathematical analysis of two-stage op-amp is elaborated and this work is compared with exiting similar work. The experimental work carried in CADENCE Virtuoso with 0 gpdk090 process technology is used to obtain 60.994 of Phase Margin, 61 dB DC gain and Offset voltage is 2mV. The M/L ratios are selected accordingly where supply voltage and load voltage are fixed at 1.8V and 12pF respectively. The parametric analysis helps, where the values are fixed to get better response.