Implementation of Low Power CMOS Full Adders Using Pass Transistor Logic

Abstract

The efficiency of a system mainly depends on the performance of internal components present in the system. The internal components should be designed in such a way that they consume low power with high speed. Lot of components is in circuits including full-adder. This is mainly used in processors. A new Pass transistor full adder circuit is implemented in this paper. The main idea is to introduce the design of high performance and based pass transistor full adders which acquires less area and transistor count. The high performance of pass transistor low power full adder circuit is designed and the simulation has been carried out on Tanner EDA Tool. The result shows that the proposed full adder is an efficient full adder cell with least MOS transistor count that reduces the high power consumption and increases the speed. In this paper CMOS full adder circuits are designed to reduce the power and area and to increase the speed of operation in arithmetic application. To operate at ultra-low supply voltage, the pass logic circuit that cogenerates the intermediate XOR and XNOR outputs has been improved to overcome the switching delay problem