A Compact Fully Electronically Tunable Memristive Circuit Based on CCCDTA with Experimental Results

This work presents a flux-controlled memristor structure employing a Current-Controlled Current Differencing Transconductance Amplifier (CCCDTA) with a grounded capacitor. The proposed emulator’s invariant and variant parts can be safely adjustable, showing promising characteristics of up to 1.5 MHz operating frequency. Furthermore, there is no need for an additional circuit, switching mechanism or changing the circuit topology for the changing of operation modes. To justify the performance of the emulator with incremental and decremental mode operations, a Monte Carlo and temperature analysis are validated using TSMC 0.18 µm technology under a symmetrical supply voltage of ±0.9 V. Furthermore, the workability of the proposed circuit is tested with commercial elements such as ALD1116, AD844 and LM13700. When compared with other studies, the presented emulator circuit demonstrates promising performance in various features

A flux controlled electronically tunable fully floating OTA based memristor emulator

In this paper, flux controlled high frequency floating/grounded type memristor emulator circuit based on single OTA (Operational Transconductance Amplifier) is introduced by using CMOS technology. The emulator is realized using single OTA, multi output transconductance amplifier, a grounded resistor and a grounded capacitor. The proposed circuit can be configured in both incremental and decremental topology by changing the connections. The proposed circuit has been simulated in LT-Spice using 0.18 μm CMOS parameters at a supply voltage of ± 1.5 V. The memristor characteristics can be electronically tuned by changing the transconductance of the OTAs. In addition, with change of the capacitor value in the proposed circuit, the pinched hysteresis loop observed in the current versus voltage plane can be held at higher frequencies. The proposed emulator circuit performs well up to 20 MHz. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature