Performance analysis of low voltage, low power dynamic double tail comparator for data convertor application

Abstract

Comparators are the basic fundamental blocks for designing high speed Analog and mixed signal system. It is the challenging task to design high speed comparator when the supply voltage is very small. This paper shows the analysis of Double Tail Comparator according to its dynamic power, static power and leakage current. From the analysis of Double Tail Comparator, a new design is proposed which is a modification of Conventional Double Tail Comparator for very small power, small voltage and high speed operation. Here we Tanner EDA software for designing these comparators with 180 nm technology. We compare the results of both of these comparators. It is shown that from the proposed structure of Double Tail Comparator, the leakage current, static power and dynamic power are significantly reduced. For the supply voltage of 0.8 V, the proposed comparator consumes reduced power of 22.3054 nW and current of 27.8818 nA.