Publication

Low power analog frontend for ISFET sensor readout

Mihai Adrian Ionescu
2018
Conference Papers

Abstract

A low power analog frontend (AFE) for Ion-Sensitive Field effect Transistor sensor readout presented. The AFE is demonstrated with off-the-shelf components. It includes a biasing circuit to an ISFET sensor, a noise rejecting current readout circuit, and a igma-delta analog to digital converter. The digital output can be interpreted by a simple counter to acquire the ion-concentration in a drop of liquid on top of the calibrated ISFET sensor. A PH sensing experiment is performed validate the AFE. Total power consumption is less than 40 μW with 1.8 V supply.

Official source

https://infoscience.epfl.ch/entities/publication/f3421f88-ab5b-44b3-a7ac-b003afef7923

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Mihai Adrian Ionescu
2018
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/f3421f88-ab5b-44b3-a7ac-b003afef7923

About this result

Related concepts (22)

Digital-to-analog converter

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