Energy-efficient Fe-based FET logic in LUT circuit with transistor reduction technique

Abstract

Ferroelectric-based Field-Effect Transistors (Fe-based FETs) are emerging devices candidates for energy-efficient circuits. In this paper, a concise logic is proposed, that is, utilizing Fe-based FETs to simplify the circuit composed of traditional Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs), thereby decreasing the number of transistors in the circuit while keeping the circuit function consistent. Further, this proposal decreases the area and the power effectively. Applications of Fe-based FETs are proposed in this research, viz., Negative-capacitance Field-Effect Transistor (NCFET) and hysteretic ferroelectric Field-Effect Transistor (FeFET) are used in the output design of a Look-up Table (LUT) on the basis of concise logic. To improve the driving capability, the output of a LUT requires an NCFET-based sensing amplifier (SA) or a FeFET-based level restorer, either of which satisfies both small-area and energy-efficient properties. That will also decrease the load of the LUT, through comparing an NCFET-based SA with a MOSFETs-based SA, 4 transistors are reduced, 2 transistors at a FeFET-based level restorer are also decreased.