Design of Low voltage, Low Power and High Speed Logic Gates Using Modified GDI Technique

In low-voltage and low-power applications, optimization of several devices for speed and power is a significant issue. These issues can be overcome by incorporating Modified Gate Diffusion Input (Mod-GDI) technique. This technique has been adopted from Gate Diffusion Input (GDI). The Mod-GDI technique allows reducing power consumption, delay and area of digital circuits, while maintaining low complexity of logic design. This paper presents the various Performance comparisons on low power techniques of different combinational logic functions and to state that the proposed Modified Gate Diffusion Input logic (Mod-GDI) to be much more power-efficient than Gate Diffusion Input logic (GDI) and static CMOS logic design with 1.8V supply voltage. By this work it is to be known that the design of different practical circuit arrangements that reveals the Mod-GDI to be superior than GDI and CMOS in the major cases with respect to supply voltage, propagation delay and total power dissipation. The designs are simulated using Mentor Graphics tools with a supply voltage of 1.8V at 90nm Process technology. Key words—Gate Diffusion Input (GDI), Mod-GDI, Total power dissipation, Propagation delay, Low Voltage