A Wide Dynamic Range Read-out System For Resistive Switching Technology

Autor: Lijie Xie, Jiawei Shen, Andrea Mifsud, Chaohan Wang, Abdulaziz Alshaya, Christos Papavassiliou
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: 2022 IEEE International Symposium on Circuits and Systems (ISCAS)
Popis: The memristor, because of its controllability over a wide dynamic range of resistance, has emerged as a promising device for data storage and analog computation. A major challenge is the accurate measurement of memristance over a wide dynamic range. In this paper, a novel read-out circuit with feedback adjustment is proposed to measure and digitise input current in the range between 20nA and 2mA. The magnitude of the input currents is estimated by a 5-stage logarithmic current-to-voltage amplifier which scales a linear analog-to-digital converter. This way the least significant bit tracks the absolute input magnitude. This circuit is applicable to reading single memristor conductance, and is also preferable in analog computing where read-out accuracy is particularly critical. The circuits have been realized in Bipolar-CMOS-DMOS (BCD) Gen2 technology.
5 pages, To be published in ISCAS 2022 and made available on IEEE Xplore
Databáze: OpenAIRE