A 38.4 nW, 1.2 V, 250-Hz, 2nd-Order gm - C LPF With Degenerative SCP Transconductors Achieving 800-mVPP Input Range and 82.1- μVrms IRN for ECG Acquisition

Simple item page
dc.contributor.authorThanapitak, Surachoke
dc.contributor.authorPawarangkoon, Prajuab
dc.contributor.authorSurakampontorn, Wanlop
dc.contributor.authorAhmad, Rafidah
dc.contributor.authorAbdullah Zawawi, Ruhaifi
dc.contributor.authorManaf, Asrulnizam Abd
dc.contributor.authorAdirek, Suriya
dc.contributor.authorChanapromma, Chaiyan
dc.date.accessioned2026-08-06T10:47:59Z
dc.date.available2026-08-06T10:47:59Z
dc.date.issued2025-01-01
dc.description.abstractIn this brief, a 2{^{\text {nd} -order gm - C lowpass filter with a practical input linear range of 400mV P dedicated to ECG signal acquisition is proposed. This filter employs a degenerative source-coupled-pair circuit as a gm cell. It enhances the linear input range by a factor of × 4 compared with the source follower filter. Additionally, to mitigate the effect of current source mismatch, a dynamic element matching technique is applied. By doing so, HD2 is suppressed more than 1.5 dB over the entire passband frequency. This proposed filter is implemented in a 0.18 μ m CMOS process. It offers a 250-Hz bandwidth with input-referred noise and a dynamic range of 82.1 μ Vrms and 67.34 dB, respectively. The power consumption of 38.4 nW is achieved with a 1.2 V supply. Compared with other recent nano-power filters, the proposed filter provides the highest linear input range with competitive Figure-of-Merit to the top-tier designs. It is therefore beneficial to the practical implementation of a low-power ECG acquisition system.
dc.identifier.citationIEEE Transactions on Circuits and Systems II Express Briefs, 72(1), 3-7, 2025
dc.identifier.doi10.1109/TCSII.2024.3451494
dc.identifier.issn15497747
dc.identifier.other2-s2.0-86000383074
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/16125
dc.sourceIEEE Transactions on Circuits and Systems II Express Briefs
dc.subjectBiopotential acquisition
dc.subjectECG
dc.subjectgm-C filter
dc.subjectheart
dc.subjectlow-power
dc.subjectlowpass filter
dc.subjectMOS
dc.subjectnano-power
dc.subjecttransconductor
dc.titleA 38.4 nW, 1.2 V, 250-Hz, 2nd-Order gm - C LPF With Degenerative SCP Transconductors Achieving 800-mVPP Input Range and 82.1- μVrms IRN for ECG Acquisition
dc.typeArticle

Files

Collections

Research