Journals Proceedings

Abstract

This paper presents a CMOS current comparator with high speed and low power consumption having minimum circuit complexity. Circuit shows a low response time to provide high speed. SPICE is used to verify the circuit performance with a standard 0.5?m and 0.35 ?m CMOS technology. Circuit with 0.5?m CMOS technology shows the propagation delay of 292.19 ps to 10.10 ns and total power dissipation of 12.19 mW to 854.69 nW for input current pulse of 1 mA to 1 ?A. Similarly circuit with 0.35 ?m CMOS technology shows the propagation delay of 390.15 ps to 20.223 ns and total power dissipation of 7.37 mW to 572.88 nW for input current pulse of 1 mA to 1 ?A. Comparisons have been made with the earlier circuit for power dissipation and delay. It has been observed that present circuit shows better performance than previous circuit.