Multiparameter Sensor Interface Circuit with Integrative Baseline/Offset Compensation by Switched-Capacitor Level Shifting/Balancing

Ji Hoon Suh; Jeong Ho Park; Soon Jae Kweon; Hyung Joun Yoo

doi:10.1109/TCSII.2017.2694445

Multiparameter Sensor Interface Circuit with Integrative Baseline/Offset Compensation by Switched-Capacitor Level Shifting/Balancing

Ji Hoon Suh, Jeong Ho Park, Soon Jae Kweon, Hyung Joun Yoo

School of Information, Communications and Electronics Engineering

Korea Advanced Institute of Science and Technology

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

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 (R²) over 0.998, which indicates a high conversion linearity.

Original language	English
Pages (from-to)	316-320
Number of pages	5
Journal	IEEE Transactions on Circuits and Systems II: Express Briefs
Volume	65
Issue number	3
DOIs	https://doi.org/10.1109/TCSII.2017.2694445
State	Published - Mar 2018

Bibliographical note

Funding Information:
Manuscript received February 22, 2017; accepted April 1, 2017. Date of publication April 14, 2017; date of current version March 8, 2018. This work was supported in part by the IC Design Education Center, and in part by the Ministry of Science, ICT, and Future Planning under Grant NRF-2016M3A9D7936939 and Grant NRF-2016M3A7B4909825. This brief was recommended by Associate Editor H. H.-C. Iu. (Corresponding author: Ji-Hoon Suh.) The authors are with the Mobile Sensor and IT Convergence Center and the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea (e-mail: [email protected]; [email protected]; [email protected]; [email protected]).

Funding Information:
This work was supported in part by the IC Design Education Center, and in part by the Ministry of Science, ICT, and Future Planning under Grant NRF-2016M3A9D7936939 and Grant NRF-2016M3A7B4909825.

Publisher Copyright:
© 2017 IEEE.

Keywords

Amplifier balancing
baseline cancellation
interpolation DAC
microsystem
multiparameter sensor interface
offset cancellation
switched-capacitor level-shifter

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10.1109/TCSII.2017.2694445

Cite this

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title = "Multiparameter Sensor Interface Circuit with Integrative Baseline/Offset Compensation by Switched-Capacitor Level Shifting/Balancing",

abstract = "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 (R2) over 0.998, which indicates a high conversion linearity.",

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note = "Funding Information: Manuscript received February 22, 2017; accepted April 1, 2017. Date of publication April 14, 2017; date of current version March 8, 2018. This work was supported in part by the IC Design Education Center, and in part by the Ministry of Science, ICT, and Future Planning under Grant NRF-2016M3A9D7936939 and Grant NRF-2016M3A7B4909825. This brief was recommended by Associate Editor H. H.-C. Iu. (Corresponding author: Ji-Hoon Suh.) The authors are with the Mobile Sensor and IT Convergence Center and the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea (e-mail: [email protected]; [email protected]; [email protected]; [email protected]). Funding Information: This work was supported in part by the IC Design Education Center, and in part by the Ministry of Science, ICT, and Future Planning under Grant NRF-2016M3A9D7936939 and Grant NRF-2016M3A7B4909825. Publisher Copyright: {\textcopyright} 2017 IEEE.",

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AB - 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 (R2) over 0.998, which indicates a high conversion linearity.

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Multiparameter Sensor Interface Circuit with Integrative Baseline/Offset Compensation by Switched-Capacitor Level Shifting/Balancing

Abstract

Bibliographical note

Keywords

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