Temperature Compensation Circuit for ISFET Sensor
PH measurements are widely used in agriculture, biomedical engineering, the food industry, environmental studies, etc. Several healthcare and biomedical research studies have reported that all aqueous samples have their pH tested at some point in their lifecycle for evaluation of the diagnosis of di...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-01-01
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| Series: | Journal of Low Power Electronics and Applications |
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| Online Access: | https://www.mdpi.com/2079-9268/10/1/2 |
| _version_ | 1798004886156083200 |
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| author | Ahmed Gaddour Wael Dghais Belgacem Hamdi Mounir Ben Ali |
| author_facet | Ahmed Gaddour Wael Dghais Belgacem Hamdi Mounir Ben Ali |
| author_sort | Ahmed Gaddour |
| collection | DOAJ |
| description | PH measurements are widely used in agriculture, biomedical engineering, the food industry, environmental studies, etc. Several healthcare and biomedical research studies have reported that all aqueous samples have their pH tested at some point in their lifecycle for evaluation of the diagnosis of diseases or susceptibility, wound healing, cellular internalization, etc. The ion-sensitive field effect transistor (ISFET) is capable of pH measurements. Such use of the ISFET has become popular, as it allows sensing, preprocessing, and computational circuitry to be encapsulated on a single chip, enabling miniaturization and portability. However, the extracted data from the sensor have been affected by the variation of the temperature. This paper presents a new integrated circuit that can enhance the immunity of ion-sensitive field effect transistors (ISFET) against the temperature. To achieve this purpose, the considered ISFET macro model is analyzed and validated with experimental data. Moreover, we investigate the temperature dependency on the voltage-current (I-V). Accordingly, an improved conditioning circuit is designed in order to reduce the temperature sensitivity on the measured pH values of the ISFET sensor. The numerical validation results show that the developed solution accurately compensates the temperature variation on the measured pH values at low power consumption. |
| first_indexed | 2024-04-11T12:31:43Z |
| format | Article |
| id | doaj.art-d6a9fbc60a194e66937bdf67fcd20c90 |
| institution | Directory Open Access Journal |
| issn | 2079-9268 |
| language | English |
| last_indexed | 2024-04-11T12:31:43Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Low Power Electronics and Applications |
| spelling | doaj.art-d6a9fbc60a194e66937bdf67fcd20c902022-12-22T04:23:45ZengMDPI AGJournal of Low Power Electronics and Applications2079-92682020-01-01101210.3390/jlpea10010002jlpea10010002Temperature Compensation Circuit for ISFET SensorAhmed Gaddour0Wael Dghais1Belgacem Hamdi2Mounir Ben Ali3National Engineering School of Monastir (ENIM), University of Monastir, Monastir 5000, TunisiaElectronics and Microelectronics Laboratory, LR99ES30, Faculty of Sciences of Monastir, University of Monastir, Monastir 5000, TunisiaElectronics and Microelectronics Laboratory, LR99ES30, Faculty of Sciences of Monastir, University of Monastir, Monastir 5000, TunisiaHigher Institute of Applied Sciences and Technology of Sousse (ISSATSo), University of Sousse, Sousse 4003, TunisiaPH measurements are widely used in agriculture, biomedical engineering, the food industry, environmental studies, etc. Several healthcare and biomedical research studies have reported that all aqueous samples have their pH tested at some point in their lifecycle for evaluation of the diagnosis of diseases or susceptibility, wound healing, cellular internalization, etc. The ion-sensitive field effect transistor (ISFET) is capable of pH measurements. Such use of the ISFET has become popular, as it allows sensing, preprocessing, and computational circuitry to be encapsulated on a single chip, enabling miniaturization and portability. However, the extracted data from the sensor have been affected by the variation of the temperature. This paper presents a new integrated circuit that can enhance the immunity of ion-sensitive field effect transistors (ISFET) against the temperature. To achieve this purpose, the considered ISFET macro model is analyzed and validated with experimental data. Moreover, we investigate the temperature dependency on the voltage-current (I-V). Accordingly, an improved conditioning circuit is designed in order to reduce the temperature sensitivity on the measured pH values of the ISFET sensor. The numerical validation results show that the developed solution accurately compensates the temperature variation on the measured pH values at low power consumption.https://www.mdpi.com/2079-9268/10/1/2isfet sensorconditioning circuittemperature compensationoverall sensitivity |
| spellingShingle | Ahmed Gaddour Wael Dghais Belgacem Hamdi Mounir Ben Ali Temperature Compensation Circuit for ISFET Sensor Journal of Low Power Electronics and Applications isfet sensor conditioning circuit temperature compensation overall sensitivity |
| title | Temperature Compensation Circuit for ISFET Sensor |
| title_full | Temperature Compensation Circuit for ISFET Sensor |
| title_fullStr | Temperature Compensation Circuit for ISFET Sensor |
| title_full_unstemmed | Temperature Compensation Circuit for ISFET Sensor |
| title_short | Temperature Compensation Circuit for ISFET Sensor |
| title_sort | temperature compensation circuit for isfet sensor |
| topic | isfet sensor conditioning circuit temperature compensation overall sensitivity |
| url | https://www.mdpi.com/2079-9268/10/1/2 |
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