This paper presents the design and experimental results for a 5×5 tin-oxide gas-sensor array system with particular focus on the employed multiplexed-analog-input 0.35μm CMOS interface circuit chip. This interface circuit reads the electrical response of all the elements of the array in time sharing by means of a solid-state selector, actually exploiting a row-column query technique and provides digital output to a dedicated Lab View™ software. The proposed system shows very promising properties in terms of data redundancy in order to improve the Signal-to-Noise-Ratio in electronic nosing and for future studies about the influence of gas consumption rate over the metal oxide surface for a 2-D array. ©2007 IEEE.
Grassi, M., Malcovati, P., Francioso, L., Siciliano, P., Baschirotto, A. (2007). Integrated Interface Circuit with Multiplexed Input and Digital Output for a 5x5 SnO2 Gas-Sensor Matrix. In Solid-State Sensors, Actuators and Microsystems Conference, 2007. Transducers 2007. International (pp.2023-2026) [10.1109/SENSOR.2007.4300560].
Integrated Interface Circuit with Multiplexed Input and Digital Output for a 5x5 SnO2 Gas-Sensor Matrix
BASCHIROTTO, ANDREA
2007
Abstract
This paper presents the design and experimental results for a 5×5 tin-oxide gas-sensor array system with particular focus on the employed multiplexed-analog-input 0.35μm CMOS interface circuit chip. This interface circuit reads the electrical response of all the elements of the array in time sharing by means of a solid-state selector, actually exploiting a row-column query technique and provides digital output to a dedicated Lab View™ software. The proposed system shows very promising properties in terms of data redundancy in order to improve the Signal-to-Noise-Ratio in electronic nosing and for future studies about the influence of gas consumption rate over the metal oxide surface for a 2-D array. ©2007 IEEE.
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