Open AccessCircuit arrangement to suppress crosstalk in chemo‐resistive sensor arrays
Author(s) -
Chowdhury Shambo Roy,
Bhondekar Amol P.,
Kumar Ritesh,
Bagchi Sudeshna,
Kaur Rishemjit,
Karar Vinod
Publication year - 2018
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2018.5187
Subject(s) - resistive touchscreen , multiplexer , crosstalk , sensor array , interconnection , electronic engineering , diode , electronic circuit , computer science , electrical engineering , optoelectronics , materials science , engineering , multiplexing , telecommunications , machine learning
Modern electronic nose and such systems, typically employ gas sensors in arrays. Access to the individual elements in an m × n resistive sensor array requires m + n interconnect lines and effect of crosstalk becomes inevitable. The crosstalk is caused due to the leakage currents in the multiplexer channels as well as the parasitic paths among the non‐selected elements in the array. Here, the authors present a novel circuit arrangement to suppress crosstalk in two‐dimensional chemo‐resistive sensor arrays. The proposed circuit employs a transistorised bypassing scheme, diodes in series and voltage feedback to non‐selected elements of an array for crosstalk elimination. Simulation results of a resistive sensor array are presented. Finally, the proposed arrangement has been applied on an 8 × 2 sensor array and the result has been compared with the same array with a normal feedback arrangement for data acquisition. The work can also be extended for general resistive sensor arrays.