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A bulk-driven ISFET-based chemical mixer

A bulk-driven ISFET-based chemical mixer
A bulk-driven ISFET-based chemical mixer
In this work the concept of the chemical mixer for comparing the pH of two aqueous solutions is introduced. Ionic concentrations are sensed via a pair of ISFETs, which are then translated into signals with frequencies that correspond to the pH values of the solutions. Using the bulk-driven single balanced topology, the number of transistors is significantly reduced, making it suitable for applications where a low supply voltage and low power consumption are essential. Finally, it is demonstrated that the output frequency of the mixer depends on the ΔpH of the solutions under test.
134-137
Zain, W.S.W.
9f3b61a6-82e6-4a45-855c-2f88964aae3d
Prodromakis, T.
d58c9c10-9d25-4d22-b155-06c8437acfbf
Toumazou, C.
52728165-8fe5-4c54-9fad-e9ccc4423dd6
Zain, W.S.W.
9f3b61a6-82e6-4a45-855c-2f88964aae3d
Prodromakis, T.
d58c9c10-9d25-4d22-b155-06c8437acfbf
Toumazou, C.
52728165-8fe5-4c54-9fad-e9ccc4423dd6

Zain, W.S.W., Prodromakis, T. and Toumazou, C. (2010) A bulk-driven ISFET-based chemical mixer At IEEE Biomedical Circuits and Systems Conference (BioCAS), Cyprus. 03 - 05 Nov 2010. , pp. 134-137. (doi:10.1109/BIOCAS.2010.5709589).

Record type: Conference or Workshop Item (Other)

Abstract

In this work the concept of the chemical mixer for comparing the pH of two aqueous solutions is introduced. Ionic concentrations are sensed via a pair of ISFETs, which are then translated into signals with frequencies that correspond to the pH values of the solutions. Using the bulk-driven single balanced topology, the number of transistors is significantly reduced, making it suitable for applications where a low supply voltage and low power consumption are essential. Finally, it is demonstrated that the output frequency of the mixer depends on the ΔpH of the solutions under test.

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More information

Published date: November 2010
Venue - Dates: IEEE Biomedical Circuits and Systems Conference (BioCAS), Cyprus, 2010-11-03 - 2010-11-05
Organisations: Electronic & Software Systems

Identifiers

Local EPrints ID: 351560
URI: http://eprints.soton.ac.uk/id/eprint/351560
PURE UUID: 08de8431-93d8-4bb9-806f-51dcb209bc4f

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Date deposited: 29 Apr 2013 09:03
Last modified: 14 Jul 2017 16:31

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Contributors

Author: W.S.W. Zain
Author: T. Prodromakis
Author: C. Toumazou

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