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Abstract
Sampling is methodology to convert analog signal to digital. Sampling based analog to digital conversion (ADC) technique are ooversampled ADCs and nyquist-rate ADCs. Oversampling ADCs yield high resolution with the help of coarse quantizes and support input signal with low bandwidths and nyquist-rate. ADC is a better choice forsampling rate is greater than 100 Mbps. A pipelined ADC contains a large number of pipelined stage, in this workdesigned technique of each pipelined stage has been described using CMOS90nm technology.