OVERVIEWOF DESIGN CHALLENGES IN HIGH-PERFORMANCE EXG INTERFACES
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Author
Badami, Komail
Pons Sole, Marc
Mavrogordatos, Themistoklis
Fivaz, Andre
Persechini, Pascal
Chételat, Olivier
Ruedi, Pierre-Francois
Emery, Stephane
DOI
Abstract
Progress in CMOS technology and a huge impetus on biomedical research has moved biopotential monitoring systems from bedside devices in clinical setups to wearable devices in the home environment. Inspite of the significant progress, design of an ExG readout system poses several circuit and system level challenges. The designed circuit should exhibit very large differential offset handling capability yet while amplifying very low frequency small ExG signals. The system should maintain high immunity to large common-mode signals arising from EMI from the mains supply or from motion artefacts. Further, systems designed for wearable and long term monitoring should be comfortable for the patient without restricting mobility, yet while enabling high noise/power efficiency. An overview of these challenges and state-of-art-solutions to mitigate them are discussed in this chapter.
Publication Reference
Harpe, Pieter, Andrea Baschirotto, and Kofi AA Makinwa, eds. Biomedical Electronics, Noise Shaping ADCs, and Frequency References: Advances in Analog Circuit Design 2022. Springer, 2023.
Year
2023-06-22