Title
Speed-Power Improvement in High-Voltage Switches Employed in Multi-Electrode Arrays
Author
Safarpour, Amin (Ferdowsi University of Mashhad)
Dehnavi, Farzaneh (Ferdowsi University of Mashhad)
Saberi, Mehdi (Ferdowsi University of Mashhad)
Lotfi, R. (TU Delft Bio-Electronics; Ferdowsi University of Mashhad)
Serdijn, W.A. (TU Delft Bio-Electronics; Erasmus MC) 
Date
2022
Abstract
In multi-electrode arrays (MEAs), for electrical recording and electrical stimulation, high voltage (HV) switches are employed to build an analog multiplexer to conduct either a HV stimulation signal from the pulse generator circuit to an electrode or a low-voltage noise-sensitive signal from the electrode to a recording stage. In this brief, a new circuit structure is proposed for HV switches that significantly improves their switching speed, reduces their power dissipation, and also employs a minimum number of bulky HV devices. In order to reduce the transition time of the proposed switch without consuming a large amount of power, during the transition time that the switch is turning on/off, a large current flows through the driver circuit of the switch to turn the switch on/off rapidly; however, after the transition times, this current is significantly reduced to save power. Based on the proposed HV switch, a multiplexer structure has been implemented in 25-V, 0.18- μm CMOS IC technology and the measurement results prove its efficacy. Supplied with 25 V and operating with 300 nA current consumption, this switch swings over 20 V with a relatively constant on-resistance of 100Ω and features a 80 ns transition time.
Subject
High-voltage analog multiplexer
high-voltage analog switch
multi-electrode array
low power consumption
To reference this document use:
http://resolver.tudelft.nl/uuid:7c1bfc3a-6720-4018-8b09-bbd9d354a7b3
DOI
https://doi.org/10.1109/TCSII.2022.3161202
Embargo date
2023-07-01
ISSN
1549-7747
Source
IEEE Transactions on Circuits and Systems Part 2: Express Briefs, 69 (7), 3139 - 3143
Bibliographical note
Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Part of collection
Institutional Repository
Document type
journal article
Rights
© 2022 Amin Safarpour, Farzaneh Dehnavi, Mehdi Saberi, R. Lotfi, W.A. Serdijn