Analysıs of Characterıstıc Values of Op-Amp Desıgned Using Memristor and Applıcatıon Examples

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Thesis Type: Doctorate

Institution Of The Thesis: Van Yüzüncü Yil University, Mühendislik Fakültesi, Elektrik Elektronik Mühendisliği Bölümü, Turkey

Approval Date: 2022

Thesis Language: Turkish

Student: İshak PARLAR

Supervisor: Mehmet Nuri Almalı

Open Archive Collection: AVESIS Open Access Collection

Abstract:

By redesigning the traditional operational amplifier (741 family) element with the memristor emulator circuit realized with the linear TiO2 drift model, the optimized operating conditions and states were determined by numerical analysis and simulation studies. Frequency, unit, switching and electrical characteristic tests have been carried out in order to design operational amplifier and achieve the ideal operating points. The proposed op-amp model is compared with the traditional op-amp model. Wien bridge and phase shift oscillator (PSO) circuits, which are RC oscillators, realized by using the proposed op-amp, oscillating start time, oscillating band sitting time, fast fourier transform (FFT) analysis and output parameters were examined and compared to oscillator circuits designed with traditional op-amps. In addition, the efficiency of these circuits has been integrated with the application circuits and the reliability of the proposed model has been verified by the results. As a result, it was observed that the proposed op-amp model improved approximately 2 times in input offset currents, 2dB increase in common mode rejection ratio (CMRR), approximately 4 times in slew rate ratio, and 2.5 times in maximum signal frequency compared to traditional op-amp model. In the oscillator circuits realized with the proposed op-amp; In the oscillating starting and settling times, the wien bridge oscillator improved by approximately 72.22% and 82.60%, respectively, and the oscillating settling time improved by approximately 37% in the phase shifted oscillator circuit.