Ultra-Low Power and High Speed CNTFETs Based Magnitude Comparator Design

Graphene and its derivatives have huge demand in future electronic devices due to its high capability to overcome restrictions that silicon materials must overcome.The Carbon NanoTubes(CNTs), can be obtained by rolling the Graphene sheet into tubes, which are Carbon NanoTubes that have attracted and got huge concern from scientific researchers. Huge efforts have been put on for the development and optimisation of nanoscale Carbon Nanotube Field Effect Transistors because of its promising applications in the field of modern electronics. This device itself has enormous number of advantages and the comparator designed with this CNTFET has much more improved performance. Here I have designed a comparator circuit using only 10 CNTFETs this circuit has power delay product improvement of 73.6% compared to comparator using 12 CNTFETs. These magnitude comparator circuit is simulated in HSpice Platform. Stanford library CNTFET model is used in HSpice to execute this comparator.