A multi-bit CMOS characterization platform for one-million resistive switching devices
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
Emerging resistive switching devices require large-scale characterization, yet existing approaches often rely on external instrumentation, small custom arrays or architectures that lack autonomous current sensing. This work introduces MELITA, a fully integrated CMOS platform that supports parallel characterization of more than one million two-terminal devices. Fabricated in 180 nm CMOS, the chip combines on-chip DACs, current-to-voltage converters, column-parallel ADCs, and a digital controller into a unified readout architecture. Automated current ranging extends measurable input currents across five decades, while programmable read voltages enable flexible test conditions. Measured results confirm both block-level and system-level operation, with a 12 bit digital output. Application-specific experiments demonstrate the ability to extract I-V curves directly from large-scale two-terminal device arrays composed of passive top-metal structures, validating scalability and readout functionality of the platform. Although noise limits the effective Signal-to-Noise Ratio (SNR) to 43dB, the platform uniquely integrates array access, analog front-end, digitization, and control into a scalable test vehicle. MELITA therefore provides a practical step toward realistic benchmarking of resistive devices within system-level CMOS environments.
Date Issued
2026-04-28
Date Acceptance
2026-03-30
Citation
IEEE Transactions on Circuits and Systems I: Regular Papers, 2026
ISSN
1549-8328
Publisher
Institute of Electrical and Electronics Engineers
Journal / Book Title
IEEE Transactions on Circuits and Systems I: Regular Papers
Copyright Statement
Copyright © 2026 IEEE. This is the author’s accepted manuscript made available under a CC-BY licence in accordance with Imperial’s Research Publications Open Access policy (www.imperial.ac.uk/oa-policy)
License URL
Publication Status
Published online
Date Publish Online
2026-04-28