TY - GEN
T1 - 33.8 A Two-Electrode Bio-Impedance Readout IC with Complex-Domain Noise-Correlated Baseline Cancellation Supporting Sinusoidal Excitation
AU - Cheon, Song I.
AU - Choi, Haidam
AU - Yun, Gichan
AU - Oh, Sein
AU - Suh, Ji Hoon
AU - Ha, Sohmyung
AU - Je, Minkyu
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - As the demand for daily monitoring of physiological signals increases, the trend towards minimizing the size of devices through a two-electrode configuration has emerged as a new standard for wearable impedance monitoring. However, the two-electrode impedance measurement configuration suffers from its large baseline, further increased by the electrode impedance and the amplified noise of the current generator (CG). These challenges have been addressed by real-domain noise-correlated baseline cancellation (BC) techniques [1-3] (Fig. 33.8.1 (top)). It performs baseline subtraction using an IDAC, whose current is correlated with the current from the CG, at the front-end current-balancing instrumentation amplifier (CBIA). This method operates well with square-wave signals of the CG, and demonstrates strong noise-cancellation capabilities, especially in resistive BioZ.
AB - As the demand for daily monitoring of physiological signals increases, the trend towards minimizing the size of devices through a two-electrode configuration has emerged as a new standard for wearable impedance monitoring. However, the two-electrode impedance measurement configuration suffers from its large baseline, further increased by the electrode impedance and the amplified noise of the current generator (CG). These challenges have been addressed by real-domain noise-correlated baseline cancellation (BC) techniques [1-3] (Fig. 33.8.1 (top)). It performs baseline subtraction using an IDAC, whose current is correlated with the current from the CG, at the front-end current-balancing instrumentation amplifier (CBIA). This method operates well with square-wave signals of the CG, and demonstrates strong noise-cancellation capabilities, especially in resistive BioZ.
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U2 - 10.1109/ISSCC49657.2024.10454399
DO - 10.1109/ISSCC49657.2024.10454399
M3 - Conference contribution
AN - SCOPUS:85188063602
T3 - Digest of Technical Papers - IEEE International Solid-State Circuits Conference
SP - 556
EP - 558
BT - 2024 IEEE International Solid-State Circuits Conference, ISSCC 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2024 IEEE International Solid-State Circuits Conference, ISSCC 2024
Y2 - 18 February 2024 through 22 February 2024
ER -