TY - JOUR
T1 - Impedance-Readout Integrated Circuits for Electrical Impedance Spectroscopy
T2 - Methodological Review
AU - Cheon, Song I.
AU - Choi, Haidam
AU - Kang, Hyoju
AU - Suh, Ji Hoon
AU - Park, Seonghyun
AU - Kweon, Soon Jae
AU - Je, Minkyu
AU - Ha, Sohmyung
N1 - Publisher Copyright:
© 2007-2012 IEEE.
PY - 2024/2/1
Y1 - 2024/2/1
N2 - This review article provides a comprehensive overview of impedance-readout integrated circuits (ICs) for electrical impedance spectroscopy (EIS) applications. The readout IC, a crucial component of on-chip EIS systems, significantly affects key performance metrics of the entire system, such as frequency range, power consumption, accuracy, detection range, and throughput. With the growing demand for portable, wearable, and implantable EIS systems in the Internet-of-Things (IoT) era, achieving high energy efficiency while maintaining a wide frequency range, high accuracy, wide dynamic range, and high throughput has become a focus of research. Furthermore, to enhance the miniaturization and convenience of EIS systems, many emerging systems utilize two-electrode or dry electrode configurations instead of the conventional four-electrode configuration with wet electrodes for impedance measurement. In response to these trends, various technologies have been developed to ensure reliable operations even at two- or dry-electrode interfaces. This article reviews the principles, advantages, and disadvantages of techniques employed in state-of-the-art impedance-readout ICs, aiming to achieve high energy efficiency, wide frequency range, high accuracy, wide dynamic range, low noise, high throughput, and/or high input impedance. The thorough review of these advancements will provide valuable insights into the future development of impedance-readout ICs and systems for IoT and biomedical applications.
AB - This review article provides a comprehensive overview of impedance-readout integrated circuits (ICs) for electrical impedance spectroscopy (EIS) applications. The readout IC, a crucial component of on-chip EIS systems, significantly affects key performance metrics of the entire system, such as frequency range, power consumption, accuracy, detection range, and throughput. With the growing demand for portable, wearable, and implantable EIS systems in the Internet-of-Things (IoT) era, achieving high energy efficiency while maintaining a wide frequency range, high accuracy, wide dynamic range, and high throughput has become a focus of research. Furthermore, to enhance the miniaturization and convenience of EIS systems, many emerging systems utilize two-electrode or dry electrode configurations instead of the conventional four-electrode configuration with wet electrodes for impedance measurement. In response to these trends, various technologies have been developed to ensure reliable operations even at two- or dry-electrode interfaces. This article reviews the principles, advantages, and disadvantages of techniques employed in state-of-the-art impedance-readout ICs, aiming to achieve high energy efficiency, wide frequency range, high accuracy, wide dynamic range, low noise, high throughput, and/or high input impedance. The thorough review of these advancements will provide valuable insights into the future development of impedance-readout ICs and systems for IoT and biomedical applications.
KW - Accuracy
KW - bio-impedance
KW - demodulation
KW - dynamic range
KW - electrode
KW - frequency range
KW - impedance
KW - measurement speed
KW - noise
KW - power consumption
KW - spectroscopy
KW - throughput
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U2 - 10.1109/TBCAS.2023.3319212
DO - 10.1109/TBCAS.2023.3319212
M3 - Article
C2 - 37751341
AN - SCOPUS:85173296095
SN - 1932-4545
VL - 18
SP - 215
EP - 232
JO - IEEE Transactions on Biomedical Circuits and Systems
JF - IEEE Transactions on Biomedical Circuits and Systems
IS - 1
ER -