Power-Efficient LFP-Adaptive Dynamic Zoom-and-Track Incremental ΔΣ Front-End for Dual-Band Subcortical Recordings
DC Field | Value | Language |
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dc.contributor.author | Oh, Sungjin | - |
dc.contributor.author | Song, Hyunsoo | - |
dc.contributor.author | Slager, Nathan | - |
dc.contributor.author | Lopez Ruiz, Jose Roberto | - |
dc.contributor.author | Park, Sung-Yun | - |
dc.contributor.author | Euisik Yoon | - |
dc.date.accessioned | 2024-01-17T22:00:45Z | - |
dc.date.available | 2024-01-17T22:00:45Z | - |
dc.date.created | 2024-01-11 | - |
dc.date.issued | 2023-08 | - |
dc.identifier.issn | 1932-4545 | - |
dc.identifier.uri | https://pr.ibs.re.kr/handle/8788114/14645 | - |
dc.description.abstract | We report a power-efficient analog front-end integrated circuit (IC) for multi-channel, dual-band subcortical recordings. In order to achieve high-resolution multi-channel recordings with low power consumption, we implemented an incremental ΔΣ ADC (IADC) with a dynamic zoom-and-track scheme. This scheme continuously tracks local field potential (LFP) and adaptively adjusts the input dynamic range (DR) into a zoomed sub-LFP range to resolve tiny action potentials. Thanks to the reduced DR, the oversampling rate of the IADC can be reduced by 64.3% compared to the conventional approach, leading to significant power reduction. In addition, dual-band recording can be easily attained because the scheme continuously tracks LFPs without additional on-chip hardware. A prototype four-channel front-end IC has been fabricated in 180 nm standard CMOS processes. The IADC achieved 11.3-bit ENOB at 6.8 μW, resulting in the best Walden and SNDR FoMs, 107.9 fJ/c-s and 162.1 dB, respectively, among two different comparison groups: the IADCs reported up to date in the state-of-the-art neural recording front-ends; and the recent brain recording ADCs using similar zooming or tracking techniques to this work. The intrinsic dual-band recording feature reduces the post-processing FPGA resources for subcortical signal band separation by >45.8%. The front-end IC with the zoom-and-track IADC showed an NEF of 5.9 with input-referred noise of 8.2 μVrms, sufficient for subcortical recording. The performance of the whole front-end IC was successfully validated through in vivo animal experiments. © 2007-2012 IEEE. | - |
dc.language | 영어 | - |
dc.publisher | Institute of Electrical and Electronics Engineers Inc. | - |
dc.title | Power-Efficient LFP-Adaptive Dynamic Zoom-and-Track Incremental ΔΣ Front-End for Dual-Band Subcortical Recordings | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.identifier.wosid | 001083108000009 | - |
dc.identifier.scopusid | 2-s2.0-85165894863 | - |
dc.identifier.rimsid | 82394 | - |
dc.contributor.affiliatedAuthor | Euisik Yoon | - |
dc.identifier.doi | 10.1109/TBCAS.2023.3298662 | - |
dc.identifier.bibliographicCitation | IEEE Transactions on Biomedical Circuits and Systems, v.17, no.4, pp.741 - 753 | - |
dc.relation.isPartOf | IEEE Transactions on Biomedical Circuits and Systems | - |
dc.citation.title | IEEE Transactions on Biomedical Circuits and Systems | - |
dc.citation.volume | 17 | - |
dc.citation.number | 4 | - |
dc.citation.startPage | 741 | - |
dc.citation.endPage | 753 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Dual-band recording | - |
dc.subject.keywordAuthor | dynamic zoom-and-track scheme | - |
dc.subject.keywordAuthor | incremental delta-sigma ADC | - |
dc.subject.keywordAuthor | neural recording front-end | - |
dc.subject.keywordAuthor | power-efficient ADC | - |