Design And Simulation of Different Comparators Using Cadence Virtuoso Analog Design- A Comparative Study

Abstract

Comparator is the main building block of any analog-to–digital converter. The comparator is a circuit that compares an analog signal with another analog signal or reference and outputs a binary signal based on the comparison In this paper we have designed the comparators using process parameter in gpdk_180 and UMC_180 technology and compared the simulated results of the open loop high gain comparator, composite comparator, preamplifier, latch and output buffer based comparators. the results of AC, DC, and transient analysis have been performed for gain, slew rate, offset DC power etc. All three high gain comparators are designed and simulated in Cadence Virtuoso Analog Design Environment.