Low Power and High Performance ALU using Dual Mode Transmission Gate Diffusion Input (DMTGDI)
Allam Srivani1, M. Lakshmi Prasanna Rani2
1Ms. Allam Srivani, M.Tech, Department of Electronics and Communication Engineering, Maharaj Vijayram Gajapathi Raj College of Engineering, Vizianagaram (Andhra Pradesh), India.
2Mrs. M. Lakshmi Prasanna Rani, Assistant Professor, Department of Electronics and Communication Engineering, Maharaj Vijayram Gajapathi Raj College of Engineering, Vizianagaram (Andhra Pradesh), India.
Manuscript received on 10 August 2017 | Revised Manuscript received on 18 August 2017 | Manuscript Published on 30 August 2017 | PP: 72-77 | Volume-6 Issue-6, August 2017 | Retrieval Number: E5089066517/17©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Using Dual Mode Transmission Gate Diffusion Input Logic (DMTGDI), a four bit ALU has been designed. The ALU can perform four arithmetic and four logical operations. Dual Mode Transmission Gate Diffusion Input (DMTGDI) logic has been promising in realizing increased functionality on a chip. The main advantage of this new logic called DMTGDI is low power and high performance. For low power applications there are so many conventional techniques are available. For reducing power consumption, sub-threshold circuit design is the one of the most important techniques. But the circuit in sub-threshold region operates with so many sensitivities and constraints. Mostly the performance of the circuit which is operated in sub-threshold region is degraded. To increase the performance of the circuit in sub-threshold region one of the most effective logic used is called as Dual Mode Logic (DML). So DML is the one of the techniques used for high speed. Another important technique is established for reducing power consumption is called Transmission Gate Diffusion Input (TGDI). In the next step, we propose to use Transmission Gate Diffusion Input (TGDI) as a foundation for new Dual Mode logic called “DMTGDI or Dual Mode Transmission Gate Diffusion Input” logic. So DMTGDI combines the advantages of both DML and TGDI. Simulations have been performed in mentor graphics tool using 130nm. Prelayout simulation results reveal that ALU design using DMTGDI logic is more advantageous than ALU design using conventional CMOS Logic.
Keywords: ALU, TGDI, DML, DMTGDI, CMOS.
Scope of the Article: Low-Power Design