A Fully Reconfigurable Universal Sensor Analog Front-End IC for the Internet of Things Era

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This paper proposes a fully reconfigurable universal sensor analog front-end for the Internet of Things era. It is implemented to be able to process different types (R, C, V, and I) of sensor output by using a single input bond pad and a single reconfigurable analog front-end. In addition, a reconfigurable acquisition mode selection method is applied to measure a wide magnitude range of sensor output. Furthermore, the compensation method for the baseline of the sensor is proposed, which can suppress the saturation of the circuit and improve the sensitivity of the sensor output. Also, the correlated double sampling technique is adopted to reduce the low-frequency noise that can affect the sensor output. The proposed system can detect within a relative error of about 1% by using only one input bond pad and analog front-end for the target sensor output range. The proposed system is implemented using TSMC 0.25-mu m CMOS process.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2019-04
Language
English
Article Type
Article
Citation

IEEE SENSORS JOURNAL, v.19, no.7, pp.2621 - 2633

ISSN
1530-437X
DOI
10.1109/JSEN.2018.2890211
URI
http://hdl.handle.net/10203/253955
Appears in Collection
EE-Journal Papers(저널논문)
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