Design of Low Power 12-bit Magnitude Comparator

The basic function in a microprocessor is magnitude comparison and also it is used in the field of digital signal processing, embedded systems so powerful magnitude comparator is needed. The objective of this paper is to provide small area, low power comparator for very large scale integration designers. in this paper a small power dissipation and less area over conventional 1 bit comparator is proposed and using this comparator a new style 12-bit comparator is proposed. Comparison between different designs is calculated by simulation that is performed at 0.25um technology in Tanner EDA Tool. It shows an 12-bit comparator of the proposed architecture only needs 196 transistors.