Ultra-low Power Relaxation Oscillator Based on Negative Capacitance Ferroelectric Field-Effect Transistor

This paper proposes a novel Ferroelectric Field-Effect transistor (FeFET) based relaxation oscillator. The novel relaxation oscillator circuit utilizes proposed biasing circuit and unique characteristics of FeFET including negative capacitance (NC), very low subthreshold swing, high transconductance (g m ) and high channel conductance, to achieve ultra-low power and fast start up. Circuit simulation results show that the proposed NC-FeFET based oscillator at 0.6 V in 0.18 µm technology has achieved 88.7% lower power and 81.6% shorter start-up time, than the CMOS-based counterpart.