Multiparameter Sensor Interface Circuit With Integrative Baseline/Offset Compensation By Switched-Capacitor Level Shifting/Balancing

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The proposed sensor interface circuit provides an integrative baseline/offset compensation to give higher adaptability and effectiveness for multiparameter sensing microsystems. Capacitive/resistive and voltage type sensors are dealt with and switched-capacitor-based circuits are mostly employed to facilitate integrative baseline/offset cancellation and interface various types of sensors. For integrative signal conditioning, sensor signals are first converted to voltage signals and then given rail-to-rail baseline compensation and fine offset cancellation of 0.7 mV/bit. At the same time, each interface circuit demonstrates a large total conversion gain (C: 194 mV/fF, R: 6260 mV/k Ω , V: 230 V/V) and a coefficient of determination (R 2 ) over 0.998, which indicates a high conversion linearity.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2018-03
Language
English
Article Type
Article
Citation

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, v.65, no.3, pp.316 - 320

ISSN
1549-7747
DOI
10.1109/TCSII.2017.2694445
URI
http://hdl.handle.net/10203/240937
Appears in Collection
EE-Journal Papers(저널논문)
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