Research Article Open Access

Design of a Low Power and High Speed Comparator using MUX based Full Adder Cell for Mobile Communications

G. Ramana Murthy1, Ajay Kumar Singh2, P. Velraj Kumar1 and Tan Wee Xin Wilson2
  • 1 Lecturer, Multimedia University, Faculty of Engineering and Technology, Melaka, Malaysia
  • 2 Multimedia University, Faculty of Engineering and Technology, Melaka, Malaysia

Abstract

This paper presents an implementation of comparator (1-bit) circuit using a MUX-6T based adder cell. MUX-6T full adder cell is designed with a combination of multiplexing control input and Boolean identities. The proposed comparator design features higher computing speed and lower energy consumption due to the efficient MUX-6T adder cell. The design adopts multiplexing technique with control input to alleviate the threshold voltage loss problem which is commonly encountered in Pass Transistor Logic (PTL) design. The proposed design successfully embeds the buffering circuit in the full adder design which helps the cell to operate at lower supply voltage compared with the other related existing designs. It also enhances the speed of the cascaded operation significantly while maintaining the performance edge in energy consumption. In the proposed design, the transistor count is minimized. For performance comparison, the proposed MUX-6T comparator (1-bit) is compared with four existing full adders based comparators using BSIM4 model parameters. The simulations are performed for 65nm process models indicate that the proposed design has lowest energy consumption along with the performance edge in both speed and energy consumption. The variants namely area and power of the proposed comparator is also compared with the published author designs to validate its suitability for low power and high speed mobile communication applications.

American Journal of Applied Sciences
Volume 14 No. 1, 2017, 116-123

DOI: https://doi.org/10.3844/ajassp.2017.116.123

Submitted On: 30 September 2016 Published On: 16 January 2017

How to Cite: Murthy, G. R., Singh, A. K., Kumar, P. V. & Wilson, T. W. X. (2017). Design of a Low Power and High Speed Comparator using MUX based Full Adder Cell for Mobile Communications. American Journal of Applied Sciences, 14(1), 116-123. https://doi.org/10.3844/ajassp.2017.116.123

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Keywords

  • Comparator
  • Full Adder Cell
  • Multiplexor
  • PTL
  • CMOS
  • High-Speed
  • High-Voltage
  • Low-Power