CMOS Transimpedance Amplifier for Biosensor Signal Acquisition

dc.contributor.author	Ibrahim, Mark
dc.date.accessioned	2014-01-20 20:48:02 (GMT)
dc.date.available	2015-05-02 05:30:36 (GMT)
dc.date.issued	2014-01-20
dc.date.submitted	2014
dc.identifier.uri	http://hdl.handle.net/10012/8147
dc.description.abstract	A 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.language.iso	en	en
dc.publisher	University of Waterloo	en
dc.subject	biosensor	en
dc.subject	transimpedance amplifier	en
dc.title	CMOS Transimpedance Amplifier for Biosensor Signal Acquisition	en
dc.type	Master Thesis	en
dc.pending	false
dc.subject.program	Electrical and Computer Engineering	en
dc.description.embargoterms	1 year	en
uws-etd.degree.department	Electrical and Computer Engineering	en
uws-etd.degree	Master of Applied Science	en
uws.typeOfResource	Text	en
uws.peerReviewStatus	Unreviewed	en
uws.scholarLevel	Graduate	en