A 2 × 2 Neural Amplifier Macro-Pixel with Shared DC Servo Loop for High-Density Brain-Computer Interfaces

Bakr H. Abdelgaliel; Marvin Exalto; Y. Ou-Yang; Dante G. Muratore

doi:10.1109/BioCAS61083.2024.10798201

A 2 × 2 Neural Amplifier Macro-Pixel with Shared DC Servo Loop for High-Density Brain-Computer Interfaces

Bakr H. Abdelgaliel^*, Marvin Exalto, Y. Ou-Yang, Dante G. Muratore

^*Corresponding author for this work

Bio-Electronics

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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Abstract

Brain-computer interfaces of the future will be recorded from tens of thousands of high-density electrodes. This paper presents a neural amplifier for next-generation single-cell resolution BCIs. The amplifier leverages spatial signal correlation to introduce a novel shared DC servo loop to improve area efficiency while maintaining state-of-the-art power efficiency. Post-layout simulations in 40 nm CMOS technology achieve a 50 dB gain in a [0.1-5.2] kHz bandwidth. The amplifier consumes 920 nW and achieves a total input-referred noise of 8 μ V_rms while occupying only 35 μ m × 35 μ m per recording channel.

Original language	English
Title of host publication	2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024
Publisher	IEEE
ISBN (Electronic)	9798350354959
DOIs	https://doi.org/10.1109/BioCAS61083.2024.10798201
Publication status	Published - 2024
Event	2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024 - Xi�an, China Duration: 24 Oct 2024 → 26 Oct 2024

Publication series

Name	2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024

Conference

Conference	2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024
Country/Territory	China
City	Xi�an
Period	24/10/24 → 26/10/24

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.

Keywords

Brain-computer interface (BCI)
DC servo loop
Neural amplifier

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10.1109/BioCAS61083.2024.10798201

A_2__2_Neural_Amplifier_Macro-Pixel_with_Shared_DC_Servo_Loop_for_High-Density_Brain-Computer_InterfacesFinal published version, 2.86 MB

Cite this

Abdelgaliel, B. H., Exalto, M., Ou-Yang, Y., & Muratore, D. G. (2024). A 2 × 2 Neural Amplifier Macro-Pixel with Shared DC Servo Loop for High-Density Brain-Computer Interfaces. In 2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024 (2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024). IEEE. https://doi.org/10.1109/BioCAS61083.2024.10798201

@inproceedings{75437ccd0b9f4242b7088bbbdcaef318,

title = "A 2 × 2 Neural Amplifier Macro-Pixel with Shared DC Servo Loop for High-Density Brain-Computer Interfaces",

abstract = "Brain-computer interfaces of the future will be recorded from tens of thousands of high-density electrodes. This paper presents a neural amplifier for next-generation single-cell resolution BCIs. The amplifier leverages spatial signal correlation to introduce a novel shared DC servo loop to improve area efficiency while maintaining state-of-the-art power efficiency. Post-layout simulations in 40 nm CMOS technology achieve a 50 dB gain in a [0.1-5.2] kHz bandwidth. The amplifier consumes 920 nW and achieves a total input-referred noise of 8 μ Vrms while occupying only 35 μ m × 35 μ m per recording channel.",

keywords = "Brain-computer interface (BCI), DC servo loop, Neural amplifier",

author = "Abdelgaliel, {Bakr H.} and Marvin Exalto and Y. Ou-Yang and Muratore, {Dante G.}",

note = "Green Open Access added to TU Delft Institutional Repository {\textquoteleft}You share, we take care!{\textquoteright} – 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. ; 2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024 ; Conference date: 24-10-2024 Through 26-10-2024",

year = "2024",

doi = "10.1109/BioCAS61083.2024.10798201",

language = "English",

series = "2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024",

publisher = "IEEE",

booktitle = "2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024",

address = "United States",

}

Abdelgaliel, BH, Exalto, M, Ou-Yang, Y & Muratore, DG 2024, A 2 × 2 Neural Amplifier Macro-Pixel with Shared DC Servo Loop for High-Density Brain-Computer Interfaces. in 2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024. 2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024, IEEE, 2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024, Xi�an, China, 24/10/24. https://doi.org/10.1109/BioCAS61083.2024.10798201

A 2 × 2 Neural Amplifier Macro-Pixel with Shared DC Servo Loop for High-Density Brain-Computer Interfaces. / Abdelgaliel, Bakr H.; Exalto, Marvin; Ou-Yang, Y. et al.
2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024. IEEE, 2024. (2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024).

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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T1 - A 2 × 2 Neural Amplifier Macro-Pixel with Shared DC Servo Loop for High-Density Brain-Computer Interfaces

AU - Abdelgaliel, Bakr H.

AU - Exalto, Marvin

AU - Ou-Yang, Y.

AU - Muratore, Dante G.

N1 - 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.

PY - 2024

Y1 - 2024

N2 - Brain-computer interfaces of the future will be recorded from tens of thousands of high-density electrodes. This paper presents a neural amplifier for next-generation single-cell resolution BCIs. The amplifier leverages spatial signal correlation to introduce a novel shared DC servo loop to improve area efficiency while maintaining state-of-the-art power efficiency. Post-layout simulations in 40 nm CMOS technology achieve a 50 dB gain in a [0.1-5.2] kHz bandwidth. The amplifier consumes 920 nW and achieves a total input-referred noise of 8 μ Vrms while occupying only 35 μ m × 35 μ m per recording channel.

AB - Brain-computer interfaces of the future will be recorded from tens of thousands of high-density electrodes. This paper presents a neural amplifier for next-generation single-cell resolution BCIs. The amplifier leverages spatial signal correlation to introduce a novel shared DC servo loop to improve area efficiency while maintaining state-of-the-art power efficiency. Post-layout simulations in 40 nm CMOS technology achieve a 50 dB gain in a [0.1-5.2] kHz bandwidth. The amplifier consumes 920 nW and achieves a total input-referred noise of 8 μ Vrms while occupying only 35 μ m × 35 μ m per recording channel.

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DO - 10.1109/BioCAS61083.2024.10798201

M3 - Conference contribution

AN - SCOPUS:85216249999

T3 - 2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024

BT - 2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024

PB - IEEE

T2 - 2024 IEEE Biomedical Circuits and Systems Conference, BioCAS 2024

Y2 - 24 October 2024 through 26 October 2024

ER -

A 2 × 2 Neural Amplifier Macro-Pixel with Shared DC Servo Loop for High-Density Brain-Computer Interfaces

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Keywords

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