Nanopower multiple-input DTMOS OTA and its applications to high-order filters for biomedical systems

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dc.contributor.authorKumngern, Montree
dc.contributor.authorKulej, Tomasz
dc.contributor.authorKhateb, Fabian
dc.contributor.authorStopjakova, Viera
dc.contributor.authorRanjan, Rajeev K.
dc.date.accessioned2026-08-06T10:31:56Z
dc.date.available2026-08-06T10:31:56Z
dc.date.issued2021-02-01
dc.description.abstractA new solution for a low-voltage multiple-input dynamic threshold operational transconductance amplifier (MIDT OTA) for low-frequency signal processing applications is presented. The differential pairs of the proposed OTA combine, for the first time, the multiple-input MOS technique along with the dynamic threshold voltage MOS to achieve a very simple and power-efficient CMOS structure with increased total transconductance. Further, the proposed MIDT OTA has been used to realize a fifth-order low-pass filter (LP) and a sixth-order band-pass filter (BP) using coupled-biquads. The proposed OTA and the filter applications are supplied with 0.5 V and consume 5 nW and 25 nW, respectively. The input band pass filter noise is 82.76 µV, while the dynamic range is 59.5 dB for the third intermodulation distortion (IMD) of 2%. The proposed circuits were designed in a 0.18 µm TSMC technology, and validated by simulations using Cadence platform.
dc.identifier.citationAEU International Journal of Electronics and Communications, 130, 2021
dc.identifier.doi10.1016/j.aeue.2020.153576
dc.identifier.issn14348411
dc.identifier.other2-s2.0-85098972173
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/11850
dc.sourceAEU International Journal of Electronics and Communications
dc.subjectDynamic threshold MOS
dc.subjectHigh-order filters
dc.subjectMultiple-input bulk-driven MOS
dc.subjectOperational transconductance amplifier
dc.titleNanopower multiple-input DTMOS OTA and its applications to high-order filters for biomedical systems
dc.typeArticle

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