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Readout circuit design for an EISCAP biosensor
Published in Institute of Electrical and Electronics Engineers Inc.
2008
Pages: 73 - 76
Abstract
We present the design of readout electronics for an Electrolyte Insulator Semiconductor capacitor (EISCAP) sensor. The sensor detects the presence of bioanalytes by sensing the change in the pH of the electrolyte. Our technique uses an EISCAP relaxation oscillator embedded in a successive approximation analog-to-digital conversion algorithm to give a digital readout of the pH of the test solution. A microcontroller based pH readout instrument, incorporating calibration to account for sensor variations, is described. Experimental results that demonstrate the efficacy of our techniques are given. © 2008 IEEE.
About the journal
JournalData powered by Typeset2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
Open AccessNo
Concepts (17)
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    ANALOG-TO-DIGITAL CONVERSIONS
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    BIOANALYTES
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    DIGITAL READOUTS
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    ELECTROLYTE INSULATOR SEMICONDUCTORS
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    Micro controllers
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    READ-OUT CIRCUITS
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    READ-OUT ELECTRONICS
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    Successive approximations
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    TEST SOLUTIONS
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    Analog to digital conversion
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    Approximation algorithms
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    Biosensors
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    Electrolytes
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    Readout systems
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    RELAXATION OSCILLATORS
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    Sensors
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    Integrated circuit manufacture