Self Calibrated Readout Frontend for Capacitive Biosensors
| Autor: | Claudia Reyes Betanzo, Arely Culebro Gomez, Guillermo Espinosa Flores Verdad |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Fabrication General Computer Science business.industry 020209 energy Capacitive sensing 020208 electrical & electronic engineering Transistor Electrical engineering Hardware_PERFORMANCEANDRELIABILITY 02 engineering and technology Capacitance Signal law.invention Capacitor CMOS law Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering Calibration Electrical and Electronic Engineering business |
| Zdroj: | IEEE Latin America Transactions. 19:83-88 |
| ISSN: | 1548-0992 |
| DOI: | 10.1109/tla.2021.9423850 |
| Popis: | In capacitive transducers area, the fabrication process variations in the parameters that define the nominal capacitance induce mismatch between the fabricated transductors; and in order to minimize it a new frontend architecture, that does not need a reference sensor for calibration, is presented here. The proposed system works with a DC reference signal, instead of an AC signal as most of the reported works. A readout system using the proposed architecture was designed in a 180nm CMOS technology for a particular capacitive microfluidic bio-sensor to detect E.Coli bacteria. The nominal sensor has a capacitance range that goes from 192pF to 122 pF for a 0-100,000 UFC/ml concentration range. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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