ISFET's Interface Circuit for Biomedical Applications Using Delta-Sigma Modulation

Simple item page
dc.contributor.authorBumrungyat, Puvanat
dc.contributor.authorKasemsuwan, Varakorn
dc.date.accessioned2026-08-06T10:23:55Z
dc.date.available2026-08-06T10:23:55Z
dc.date.issued2019-01-10
dc.description.abstractThis paper presents a new ISFET's interface circuit for biomedical applications using delta-sigma modulation. The proposed design operates ISFET in the linear region so that an output current is linearly dependent on pH over a wide range (pH 2 to pH 14). Conversion to a digital output domain is done using a sigma-delta converter making the interface circuit very robust and reliable for most sensor applications. The proposed circuit is designed in a 0.18 μm technology. The supply voltage is 1.8 V and the total current drawn is 56 μA. The simulation results show that the proposed circuit can sense a pH with an error within the range of -0.2% to 0.3% for pH ranging from 2 to 14.
dc.identifier.citationBmeicon 2018 11th Biomedical Engineering International Conference, 2019
dc.identifier.doi10.1109/BMEiCON.2018.8609936
dc.identifier.other2-s2.0-85062071885
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/9690
dc.sourceBmeicon 2018 11th Biomedical Engineering International Conference
dc.subjectBiosensor
dc.subjectDelta-sigma modulation
dc.subjectISFET pH sensor
dc.subjectLinear region
dc.subjectReadout circuit
dc.titleISFET's Interface Circuit for Biomedical Applications Using Delta-Sigma Modulation
dc.typeConference Paper

Files

Collections

Research