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Low-Power 8-Bit Adiabatic Barrel Shifter for DSP Applications

  • Nagesh NazareEmail author
  • B. S. Premananda
  • Pradeep S. Bhat
  • R. J. Nayana
Conference paper
  • 18 Downloads
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 1089)

Abstract

The CMOS technology is recognized for high levels of integration and low power dissipation. Portable devices usually operate on batteries with minimal charge storage capacity. Power consumption is the limiting factor for the functionality offered by portable devices that operate on batteries. This has made researchers explore for new techniques to recover the energy from the circuit. One of the efficient ways to reduce the power consumption of the circuits is to design the circuit using adiabatic logic. Shifters are one of the basic elements of digital signal processors and are used for manipulating the data. Shifters are used to efficiently perform division and multiplication operation on unsigned integers by powers of two. There exist two types of shifters, viz. combinational and sequential Shifters. The paper focuses on the design of power efficient 8-bit combinational shifter, namely barrel shifter using positive feedback adiabatic logic (PFAL). Also, a comparison is performed with the conventional static CMOS barrel shifter using multiplexer logic and pass transistor logic. Cadence Virtuoso is used for the implementation with CMOS 180 nm technology, and Cadence Spectre simulator is used for simulation and functional verification. The analysis of the logic circuits infers that PFAL-based barrel shifter consumes the least power. The power values infers that PFAL technique is advantageous when applied to low-power digital devices operated at relatively low frequencies.

Keywords

Adiabatic logic Barrel shifter DSP Spectre PFAL 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Nagesh Nazare
    • 1
    Email author
  • B. S. Premananda
    • 1
  • Pradeep S. Bhat
    • 1
  • R. J. Nayana
    • 1
  1. 1.R.V. College of EngineeringBengaluruIndia

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