Comparative Analysis of Preamplifiers for Comparators

Abstract

In low power electronics technology, a lot of new technology has already been introduced to reduce the power consumption of comparator. This paper presents the comparative study of preamplifier circuit on power consumption and delay prospects. The preamplifiers are explained to make the clear difference in the state-of the art. Every circuit has their own importance in the different application such as analog-to-digital converter and comparator. The general trend to design an efficient preamplifier is that it should have low power consumption in their operation. Operating region of preamplifier circuit is observed as sub threshold and saturation. A small modification has been performed in preamplifier in comparator circuit and compared the power and delay with the reported comparator circuits. All the preamplifier circuits are implemented on 180nm CMOS technology node. The voltage supply used 1.2 V in implemented circuit.