Performance Analysis of Magnitude Comparator Using an Adiabatic Technique

As the complexity of System-on-Chip (SoC) designs continues to advance, the challenges associated with power dissipation and heat generation become increasingly pronounced. To enhance power optimization, there's a growing need for innovative energy-saving techniques. Furthermore, the usage of low-power arithmetic circuits has become essential in the development of cutting-edge computing devices. Regular conventional VLSI circuit design techniques based on static CMOS logic gates and synchronous clocking methods suffer from high static and dynamic power consumption, limited energy efficiency, and challenges in implementing clock gating. Static power consumption, where power is dissipated even when the circuit is idle, can be a major concern in battery-operated devices. Dynamic power consumption is a result of charging and discharging capacitors during signal transitions. In contrast, adiabatic logic introduces an innovative solution by minimizing energy dissipation during switching events. This approach significantly reduces both static and dynamic power consumption, making it a more energy-efficient choice for power-constrained applications. Additionally, adiabatic logic mitigates clock gating challenges and offers an avenue to enhance the overall energy efficiency of Very Large-Scale Integration (VLSI) circuits. Adiabatic techniques, therefore, have become essential in modern VLSI design, addressing critical power optimization concerns while maintaining or even improving performance levels. In this paper, our focus is on designing an ECRL (Efficient Charge Recovery Logic) based magnitude comparator using 32nm CMOS transistors technology. The designed comparator is then realized and implemented in LT SPICE and then compared with conventional magnitude comparator.