IEEE Transactions on Circuits and Systems Part II: Express Briefs, ( ISI ), Volume (69), No (7), Year (2022-7) , Pages (3139-3143)

Title : ( Speed-Power Improvement in High-Voltage Switches Employed in Multielectrode Arrays )

Authors: Amin Safar Pour , farzaneh dehnavi , Mehdi Saberi , Reza Lotfi ,

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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 paper, 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 100 Ω and features a 80 ns transition time.

Keywords

, High-voltage analog multiplexer, high-voltage analog switch, multi-electrode array, low power consumption.
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@article{paperid:1091070,
author = {Safar Pour, Amin and Dehnavi, Farzaneh and Saberi, Mehdi and Lotfi, Reza},
title = {Speed-Power Improvement in High-Voltage Switches Employed in Multielectrode Arrays},
journal = {IEEE Transactions on Circuits and Systems Part II: Express Briefs},
year = {2022},
volume = {69},
number = {7},
month = {July},
issn = {1549-7747},
pages = {3139--3143},
numpages = {4},
keywords = {High-voltage analog multiplexer; high-voltage analog switch; multi-electrode array; low power consumption.},
}

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%0 Journal Article
%T Speed-Power Improvement in High-Voltage Switches Employed in Multielectrode Arrays
%A Safar Pour, Amin
%A Dehnavi, Farzaneh
%A Saberi, Mehdi
%A Lotfi, Reza
%J IEEE Transactions on Circuits and Systems Part II: Express Briefs
%@ 1549-7747
%D 2022

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