Current Mode Comparator Design for Biomedical Applications

In this paper, a new current mode low power comparator design is presented. In analog to digital conversion process, comparator is an important device widely used in the converting signals from analog to digital. Design is specially concentrated for biomedical device applications. The circuit includes two cascaded CMOS inverter with one diode connected transistors and another transistor (M1) used as a reference current. Due to this changing design has reduced power dissipation, increase gain and speed. The circuit is simulated in a 0.18 μm CMOS technology with supply voltage 1.8 volt. Comparator was implemented for biomedical application in 0.18 μm technology with 1.8 volt supply. A primary advantage of building this design is the case of scaling with technology, and the power and area reduction. The total power is consumed 45.42 μW.