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dc.contributor.authorIbrahim, Mark 20:48:02 (GMT) 05:30:36 (GMT)
dc.description.abstractA 1-GΩ CMOS transimpedance amplifier (TIA) suitable for processing sub-nA-level currents in electrochemical biosensor signal-acquisition circuits is presented. Use of a two-stage active transconductor provides resistive feedback in place of a large-area linear resistor. The TIA feedback loop is engineered to suppress output offset caused by DC input leakage currents of ±0.9 nA. A mechanism to tune the low-frequency cutoff of the TIA from 0.7 Hz to 500 Hz is implemented which permits operation under variable environmental conditions. Simulated and experimental results from a custom TIA fabricated in a 3.3-V 0.35-µm CMOS process are presented.en
dc.publisherUniversity of Waterlooen
dc.subjecttransimpedance amplifieren
dc.titleCMOS Transimpedance Amplifier for Biosensor Signal Acquisitionen
dc.typeMaster Thesisen
dc.subject.programElectrical and Computer Engineeringen
dc.description.embargoterms1 yearen and Computer Engineeringen
uws-etd.degreeMaster of Applied Scienceen

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