pH ISFET sensor with PVTA compensation

Sensory system performance and variability depend on the compensation degree against fabrication process, voltage, temperature and ageing (PVTA) variations. A pH ion sensitive field-effect transistor sensor with PVTA compensation is presented; stages for calibration and sensitivity adjustment were a...

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Veröffentlicht in:	Electronics letters 2016-01, Vol.52 (1), p.15-17
Hauptverfasser:	Carrillo-Martínez, L.A, Espinosa Flores-Verdad, G, Pérez, B.M, Molina Reyes, J
Format:	Artikel
Sprache:	eng
Schlagworte:	Adjustment ageing Aging Biomedical technology Calibration chemical sensors Compensation Electric potential fabrication process ion sensitive field effect transistors pH ion sensitive field‐effect transistor sensor pH ISFET sensor pH measurement PVTA compensation sensitivity adjustment Sensors temperature variation Voltage voltage variation
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Beschreibung
Zusammenfassung:	Sensory system performance and variability depend on the compensation degree against fabrication process, voltage, temperature and ageing (PVTA) variations. A pH ion sensitive field-effect transistor sensor with PVTA compensation is presented; stages for calibration and sensitivity adjustment were also included. To validate its performance, the proposed sensor was compared with a non-compensated sensor; the results showed that PVTA variations were reduced by 81.50% for fabrication process and ageing, 87.91% for voltage and 80.30% for temperature. The maximum resolution achieved was 833.33 mV/pH.
ISSN:	0013-5194 1350-911X 1350-911X
DOI:	10.1049/el.2015.2573