Single DVCCTA based high frequency incremental/decremental memristor emulator and its application

Abstract Memristor emulator based on TiO 2 model is introduced. The proposed circuit uses current mode building block DVCCTA (Differential Voltage Current Conveyor Transconductance Amplifier) using 0.25 µm CMOS technology. The presented circuit uses single CMOS based DVCCTA, three resistors and one capacitor. It can operate up to 1 MHz in both the incremental and decremental configuration by interchanging the connections. Theoretical analysis of the proposed circuit resulting in the equivalent memristance equation is done and non-ideal analysis is also included. PSPICE simulations are performed. Simulation results agree well with theoretical assumption. To verify the practicability of the circuit, PCB prototype has been made using AD844AN and CA3080. The experimental demonstration is carried out for 50 kHz and 100 kHz. Moreover, the circuit has also been tested for non-volatility features. It is observed from the experimental test result and using 0.25 µm CMOS technology that maximum frequency is 10 kHz and 50 kHz respectively. To check the functionality of the circuit two combinations of memristor are connected in serial and parallel and desired results are obtained. Memristor based high pass filter is also discussed so as to study the memristor behavior in comparison to the resistor.

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