Resistorless Floating/Grounded Memristor Emulator Model With Electronic Tunability

Abstract

The realization of memristor devices with specific operating parameters is a challenging task, which drives innovation in emulation circuits. This article offers a simple and novel resistorless memristor emulator design with an electronic controllability feature. The proposed model is suitable for both floating and grounded memristor applications and can operate in incremental/decremental modes effectively without switches. The proposed model comprises a voltage differencing current conveyor (VDCC) and an operational transconductance amplifier (OTA) as active components and requires a single capacitor as its passive element. This model emulates the memristors pinched hysteresis loop in current-voltage (I-V) plane. Simulation is carried out for a 180 nm CMOS technology with a supply voltage of 10.9 V. The proposed design exhibits non-linear behavior for a wide range of input voltage and operates well up to 8 MHz. The reliability and robustness of the proposed design have been verified for short-term non-volatility, temperature variation, Monte-Carlo and process corner analysis. The experimental verifications are carried out on a breadboard using ICs AD844 and CA3080.