Compact Charge-Controlled Memristance Simulator with Electronic/Resistive Tunability

The work endeavors to realize a single Voltage Differencing Current Conveyor (VDCC)-based current-controlled memristor emulator with charge-dependent linear memristance function. Such current-controlled memristors closely model the current (i)-voltage (v) relationship of the popular TiO2-based physical memristor architecture constructed by Hewlett-Packard (HP). The presented emulator circuit comprises only two grounded passive elements and two external MOS transistors along with a VDCC active element and provides the facility of electronic/resistive tunability. It is found through the detailed literature survey that the presented circuit is the most compact design to realize a charge-controlled memristance simulator as compared to any previously reported structure. The designed configuration has been verified through presented simulation results generated using PSPICE based on 0.18 pm CMOS technology. It has also been validated through relaxation and chaotic oscillators developed using the proposed VDCC-based memristor emulator and output waveforms have been shown. Furthermore, the discussed memristor emulator has been implemented and verified through commercial ICs, AD844 and LM13700.

Automated summary

This paper presents a single current-controlled memristor emulator based on Voltage Differencing Current Conveyor (VDCC) technology, which realizes a linear memristance function with charge dependence. The designed circuit is compact and has been verified through simulations and demonstrations of output waveforms using PSPICE and commercial ICs.