High-Performance Dynamic Feedback Controlbased 8T SRAM using CNTFET Technology

Abstract

Exploration of new materials and device technologies for integrated circuits has become essential due to the exponential growth in demand for highperformance, energy-efficient, and scalable computers. In light of their exceptional electrical and mechanical characteristics, carbon nanotube field-effect transistors (CNTFETs) have emerged as a competitive alternative to traditional Complementary Metal-Oxide-Semiconductor (CMOS) based devices. In this work, a comprehensive overview of recent advancements, challenges, and prospects concerning CNTFET-based Static Random Access Memory (SRAM) cell design. SRAM performance poses significant challenges for VLSI circuits, including power dissipation, operational speed, area efficiency, and leakage current. Technology scaling-induced short-channel effects advocate transitioning from CMOS to CNTFET-based designs. Here, we propose an SRAM design incorporating Dynamic Feedback Control (DFC) features at CMOS 22nm technology nodes. Simulation results conducted using Synopsis HSPICE demonstrate notable enhancements: a 34% reduction in average power consumption, a 95.3% decrease in leakage current, and a 71.6% improvement in delay compared to MOSFET-based SRAM cells. Moreover, energy efficiency for read/write operations improves by 99.6%, and power dissipation is enhanced by 98.5% over MOSFET-based SRAM designs.