Design of 4 Bit Alu Using Modified Gdi Technology for Power Reduction
Journal Title: International Journal of Engineering and Science Invention - Year 2018, Vol 7, Issue 2
Abstract
In day to day development of transportable digital applications, the requirement for reducing delay, decreasing in size, and low power dissipation various analysis efforts . We would like to enhance the performance of logic circuits, once supported ancient CMOS technology, and resulted within the development of the many logic style techniques throughout the last twenty years. GDI (Gate diffusion input) is a method of low power digital combinable style. This method permits less power consumption and reduced propagation delay with minimum range of transistors as compare to alternative presently used logic style designs, like CMOS, PTL, CPL and TG. XOR was enforced victimization the accessible technologies & ascertained that GDI technology is giving less power consumption. But within the GDI technology output voltage swing degradation, fabrication complexness, & power consumption issues are the disadvantages. Attributable to this reason changed GDI was planned. Modified GDI technology is additional economical in terms of power consumption, fabrication complexness, and low output voltage swing degradation when put next to GDI technology. The ALU consists of 2×1MUX, 4×1MUX and full adder circuits. These circuits were implemented using Tanner EDA tools. The 4-bit ALU and its blocks were designed using GDI& modified GDI. Comparative study states that Modified GDI giving low power consumption. .
Authors and Affiliations
E V Nagalakshmi, K Kavya
Keywords
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