16-nW 0.5-V low-pass filter for bio-signal applications

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dc.contributor.authorPhatsornsiri, Punnavich
dc.contributor.authorKumngern, Montree
dc.contributor.authorKhateb, Fabian
dc.contributor.authorTorteanchai, Usa
dc.contributor.authorWongprommoon, Natapong
dc.contributor.authorKulej, Tomasz
dc.date.accessioned2026-08-06T10:48:18Z
dc.date.available2026-08-06T10:48:18Z
dc.date.issued2025-01-01
dc.description.abstractA low-voltage, ultra-low power fully differential low-pass filter for bio-signal applications using multiple-input fully differential operational transconductance amplifiers (OTA) is presented in this article. The multiple inputs of OTA can be achieved using multiple-input dynamic threshold MOS transistor (MIDT-MOST) technique. The novelty of this work is to exhibit the proposed filter using multiple-input OTAs, which leads to a reduction in the number of active OTAs and power consumption. The fourth-order low-pass filter that is cascaded by two second-order filters has been presented. The fourth-order low-pass filter is designed and simulated in the Cadence environment using the 0.18 μm CMOS technology from TSMC at a supply voltage of 0.5 V. The simulation results show that the filter consumes 16 nW of power at a bandwidth of 110 Hz, has a total harmonic distortion (THD) of 1 % at 204.96 mV input amplitude, and provides dynamic range of 69.24 dB. These results indicate that the proposed low-pass filter can be applied to bio-signal processing applications.
dc.identifier.citationAEU International Journal of Electronics and Communications, 188, 2025
dc.identifier.doi10.1016/j.aeue.2024.155570
dc.identifier.issn14348411
dc.identifier.other2-s2.0-85208599093
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/16218
dc.sourceAEU International Journal of Electronics and Communications
dc.subjectActive filter
dc.subjectBio-signal processing
dc.subjectDynamic threshold MOST transistor
dc.subjectOperational transconductance amplifier
dc.title16-nW 0.5-V low-pass filter for bio-signal applications
dc.typeArticle

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