Comparative Analysis of Noise, Power, Delay and Area of Different Full Adders in 45nm Technology

VLSI Circuit Design is a significant subject for instance like adders and multipliers for the implementation of a various of logic and arithmetic functions likes of basic circuit approach and topology. Full adders like digital signal processors (DSP) architectures and microprocessors are vital elements in the application. Apart from that, the adding of two numbers is main assignment. it's key that determines the overall speed of the critical path lies in the vast majority of these systems like subtraction, multiplication , division , address calculation system as participate in many other activities . So the 1 -bit full adder cells (connective building blocks) is an essential objective of attractive performance. This paper show relative study of highspeed, low-power and low voltage full adder circuits. Our aim is to compare different XOR XNOR full adder based circuit to and designs a high efficiency adder. We have studied 27 different combinations of adders and studied noise, average power, the ability to delay, utilization of space in 45nm technology.