1.8 V, 25.9 nW, 91.86 dB dynamic range second-order lowpass filter tunable in the range 4-100 Hz

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dc.contributor.authorReddy, J.R.M.K.
dc.contributor.authorLaxminidhi, T.
dc.date.accessioned2026-02-05T09:29:34Z
dc.date.issued2019
dc.description.abstractA second-order lowpass Butterworth filter with tunable bandwidth capable of offering a dynamic range of 91.86 dB operating on a supply voltage of 1.8 V is presented. The proposed filter is based on a sub-threshold source follower. The transistor bias currents are switched to enable the bandwidth tuning in the range 4-100 Hz. A proportional to absolute temperature (PTAT) current reference circuit helps to keep the bandwidth intact across process, voltage and temperature variations. The filter, designed in 0.18 ?m standard CMOS process, consumes 25.9 nW making it a potential candidate for portable biomedical applications. © The Institution of Engineering and Technology 2019.
dc.identifier.citationIET Circuits, Devices and Systems, 2019, 13, 7, pp. 1086-1092
dc.identifier.issn1751858X
dc.identifier.urihttps://doi.org/10.1049/iet-cds.2019.0031
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/24347
dc.publisherInstitution of Engineering and Technology kvukmirovic@theiet.org
dc.subjectBandwidth
dc.subjectButterworth filters
dc.subjectMedical applications
dc.subjectThreshold voltage
dc.subjectBandwidth tuning
dc.subjectBiomedical applications
dc.subjectCurrent reference circuits
dc.subjectProcess , voltage and temperatures
dc.subjectProportional to absolute temperature
dc.subjectSource followers
dc.subjectStandard CMOS process
dc.subjectTunable bandwidth
dc.subjectLow pass filters
dc.title1.8 V, 25.9 nW, 91.86 dB dynamic range second-order lowpass filter tunable in the range 4-100 Hz

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