CMOS Transimpedance Amplifier for Biosensor Signal Acquisition
| dc.contributor.author | Ibrahim, Mark | |
| dc.date.accessioned | 2014-01-20T20:48:02Z | |
| dc.date.available | 2015-05-02T05:30:36Z | |
| dc.date.issued | 2014-01-20 | |
| dc.date.submitted | 2014 | |
| 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.description.embargoterms | 1 year | en |
| dc.identifier.uri | http://hdl.handle.net/10012/8147 | |
| dc.language.iso | en | en |
| dc.pending | false | |
| dc.publisher | University of Waterloo | en |
| dc.subject | biosensor | en |
| dc.subject | transimpedance amplifier | en |
| dc.subject.program | Electrical and Computer Engineering | en |
| dc.title | CMOS Transimpedance Amplifier for Biosensor Signal Acquisition | en |
| dc.type | Master Thesis | en |
| uws-etd.degree | Master of Applied Science | en |
| uws-etd.degree.department | Electrical and Computer Engineering | en |
| uws.peerReviewStatus | Unreviewed | en |
| uws.scholarLevel | Graduate | en |
| uws.typeOfResource | Text | en |