High Speed and Low Power Basic Digital Logic Gates, Half-Adder and Full-Adder Using Modified Gate Diffusion Input Technology

Abstract

In this paper, modified gate diffusion input (MGDI) technology has been used for the design and implementation of digital integrated circuits (ICs). In today’s digital world, IC plays a vital role in high-performance computing, communication, and many consumer electronics. IC manufacturing technology has scaled down to smaller device dimensions. This scaling has a great impact on the design of digital ICs. The main objective of the IC manufacturing technology is to reduce area, power dissipation and delay for a very fast digital circuit. The demand for low power system and increased logic density has led to the introduction of new design technologies. A new technology has been developed to overcome the inherent issues of the existing circuit technologies, known as Gate Diffusion Input (GDI). GDI is a low power design technique for the rapid digital circuits. It has proved to be more efficient as compared to the Complementary Metal Oxide Semiconductor (CMOS), Pass Transistor Logic (PTL) technology and Transmission Gate (TG) in terms of performances such as lesser transistor count, low power dissipation, high speed and lesser area. A further improvement of GDI technology is the MGDI. It allows further reduction in power dissipation, propagation delay, and layout area effectively as compared to GDI, CMOS, PTL, and TG. The Cadence Virtuoso environment using GPDK 180 nm bulk CMOS process technology has been used to simulate the basic digital logic gates, half-adder, and full-adder. The different parameters such as transistor count, propagation delay, power dissipation and layout area have been compared showing the advantages of the MGDI over the standard CMOS technology.
Keywords: Integrated circuit (IC), Complementary metal oxide semiconductor (CMOS), Gate diffusion input (GDI), pass transistor logic (PTL), Modified gate diffusion input (MGDI), Very Large Scale Integration (VLSI)

Cite this Article
Khoirom Johnson Singh, Tripurari Sharan, Huirem Tarunkumar. High Speed and Low Power Basic Digital Logic Gates, Half-Adder and Full-Adder Using Modified Gate Diffusion Input Technology. Journal of VLSI Design Tools & Technology. 2018; 8(1): 34–42p.