Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/24359
Title: | A Bio-Impedance Readout IC with Frequency Sweeping from 1k-to-1MHz for Electrical Impedance Tomography | Authors: | Hyunsoo, Ha Konijnenburg, Mario Lukita, Budi Van Wegberg, Roland Xu, Jiawei Van Den Hoven, Richard LEMMENS, Marijn THOELEN, Ronald Van Hoof, Chris Van Helleputte, Nick |
Issue Date: | 2017 | Publisher: | IEEE Xplore | Source: | 2017 Symposium on VLSI Circuits Digest of Technical Papers, IEEE Xplore,p. C174-C175 | Abstract: | This paper presents a bio-impedance (BIOZ) readout IC for electrical impedance tomography (EIT). The IC includes a complete readout channel for impedance characterization at various frequencies ranging from 1k-to-1MHz, an input multiplexer and a programmable digital controller enabling multi-frequency impedance scanning from multiple locations. To relax the bandwidth requirements of the readout channel, pre-demodulation before the IA is employed. A fast channel settling mechanism (<1ms) allows quick switching between frequencies enabling a fast imaging speed. Dynamic element matching (DEM) in the current generation and chopping in the readout front-end are adopted to mitigate 1/f noise resulting in a noise floor of 38.4mRMS. This IC, fabricated in 0.18m, consumes 18.7W and 63W in the readout front-end and the current generator (CG), respectively. By means of in-vitro and in-vivo testing its effectivity for EIT is demonstrated. | Keywords: | frequency measurement; tomography; integrated circuits; impedance; frequency modulation; electrodes | Document URI: | http://hdl.handle.net/1942/24359 | ISBN: | 9784863486065 | DOI: | 10.23919/VLSIC.2017.8008471 | ISI #: | 000428759000069 | Rights: | Copyright© 2017 by the Japan Society of Applied Physics. All rights reserved. | Category: | C1 | Type: | Proceedings Paper | Validations: | ecoom 2019 |
Appears in Collections: | Research publications |
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proceeding paper.pdf Restricted Access | Published version | 1.03 MB | Adobe PDF | View/Open Request a copy |
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