Anugerah Firdauzi - DR project

Data Converter for Memristor Readout

Doctoral Researcher: Anugerah Firdauzi
Local ZEA-2 Supervisor: Christian Grewing
Academic Supervisor: Stefan van Waasen, University of Duisburg-Essen (UDE)
Topic: Neuromorphic Computing
Research Field: Information

Memristor Overview

The memristor, theorized by Leon Chua in 1971 [1], is the fourth basic electronic component after the resistor, capacitor, and inductor. Plainly put, a memristor is a variable, multi-level resistor that conserves the current conductance state even without power. Following its reinvention by R. S. Williams and his teams at Hewlett-Packard in 2008 [2], the memristor has found its way into a broad research area. Starting with the implementation of the device itself, modeling, and its application in a new paradigm for memory and neural networks, memristor has become a building block that allows research on neuromorphic computing to progress rapidly.


Anugerah Firdauzi's DR project
Figure 1: Illustration of memristor implementation in a crossbar array. [3]
Anugerah Firdauzi's DR project
Figure 2: Computing in Memory (CIM) using memristor crossbar array together with DACs, ADCs, and some digital circuits for control and post processing.

Research Objective

The objective of this research is to design a high-resolution, current-based ADC using a 28 nm bulk CMOS technology, capable of measuring the total current flowing from multiple memristor tiles within a single column of the array. Alongside the high-resolution requirement, it is crucial to minimize the ADC's area and power consumption since it needs to align with the width of a memristor column to avoid stretching out the array unnecessarily.


[1] L.O. Chua. 1971. Memristor-The Missing Circuit Element. IEEE Trans. On Circuit Theory.
[2] D.B. Strukov, R.S. Williams, 2008. The missing memristor found. Nature.
[3] A. Mehonic, 2020. Memristors – From In-Memory Computing, Deep Learning Acceleration, and Spiking Neural Networks to the Future of Neuromorphic and Bio-Inspired Computing. Adv. Intell. Syst.

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Last Modified: 11.07.2023