0.5 V Multiple-Input Fully Differential Operational Transconductance Amplifier and Its Application to a Fifth-Order Chebyshev Low-Pass Filter for Bio-Signal Processing

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dc.contributor.authorKulej, Tomasz
dc.contributor.authorKhateb, Fabian
dc.contributor.authorKumngern, Montree
dc.date.accessioned2026-08-06T10:45:50Z
dc.date.available2026-08-06T10:45:50Z
dc.date.issued2024-04-01
dc.description.abstractThis paper presents a multiple-input fully differential operational transconductance amplifier (MI-FD OTA) with very low power consumption. To obtain a differential MOS pair with minimum supply voltage and minimum power consumption, the multiple-input bulk-driven MOS transistor operating in the subthreshold region is used. To show the advantage of the MI-FD OTA, a fifth-order Chebyshev filter was used to realize a low-pass filter capable of operating with a supply voltage of 0.5 V and consuming 60 nW at a nominal setup current of 3 nA. The proposed filter uses five MI-FD OTAs and five capacitors. The total harmonic distortion (THD) was 0.97% for a rail-to-rail sinusoidal input signal. The MI-FD OTA and the filter application were designed and simulated in the Cadence environment using a 0.18 µm CMOS process from TSMC. The robustness of the design was confirmed by Monte Carlo analysis and process, voltage, and temperature corner analysis.
dc.identifier.citationSensors, 24(7), 2024
dc.identifier.doi10.3390/s24072150
dc.identifier.issn14248220
dc.identifier.other2-s2.0-85190281223
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/15564
dc.sourceSensors
dc.subjectbulk-driven
dc.subjectlow-pass filter
dc.subjectlow-voltage low-power CMOS
dc.subjectmultiple input MOS transistor
dc.title0.5 V Multiple-Input Fully Differential Operational Transconductance Amplifier and Its Application to a Fifth-Order Chebyshev Low-Pass Filter for Bio-Signal Processing
dc.typeArticle

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