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Frequency : 12 issues per year
Subject : Computer Applications and Technology
ISSN : 2319–8656 (Online)
Home Archives Volume 6 Issue 1 ijcatr06011011

IJCATR Volume 6 Issue 1

Design and Reliability Analysis of Differential Resistance to Current Conversion Circuit for Biomedical Application of Gas Sensing

Zeinab Hijazi Daniele Caviglia Hussein Chible Maurizio Valle
10.7753/IJCATR0601.1011
keywords : resistive gas sensors; E-nose; portable applications; R-to-I conversion; process variation; environmental corners

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Gas sensing in biomedical applications shows a conversion of the concentration of the exhaled gas to a variation in resistance, so an electronic integrated interface circuit is required to analyse the exhaled gases, which are indications for many diseases. In this paper, a resistance to current conversion circuit based on differential biasing for Electronic nose (E-nose) breath analyser is presented. Over more than 5-decades (500? to 100M?) input resistance range, a precision, less than 1%, required by novel gas sensing system in portable applications, is preserved. Therefore, the proposed circuit obtains high accuracy under simulation. The outputs of the proposed Resistance to Current (R-to-I) conversion circuit achieve a percentage error below 0.25% under environment corners. The reliability of the proposed circuit is also investigated under the effect of process variations. In order to assess the correctness of the proposed architecture, the circuit was compared to similar solutions presented in literature where the proposed architecture attains a worst-case percentage error of 0.05%.
@artical{z612017ijcatr06011011,
Title = "Design and Reliability Analysis of Differential Resistance to Current Conversion Circuit for Biomedical Application of Gas Sensing",
Journal ="International Journal of Computer Applications Technology and Research(IJCATR)",
Volume = "6",
Issue ="1",
Pages ="61 - 65",
Year = "2017",
Authors ="Zeinab Hijazi Daniele Caviglia Hussein Chible Maurizio Valle"}
  • The paper proposes a new architecture for resistance to current conversion circuit.
  • Reliability analysis is provided to ensure the robustness of the designed architecture.
  • The proposed architecture achieved high accuracy in converting the resistance into current.
  • A performance evaluation is carried out and the accuracy is compared to solutions in literature
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