TY - GEN
T1 - A Biopotential Recording IC with <10-ms-Settling Hybrid DC Servo Loop
AU - Kim, Yegeun
AU - Seok, Changhun
AU - Jung, Yoontae
AU - Ha, Sohmyung
AU - Je, Minkyu
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - This paper presents a low-noise, low-power biopotential recording IC with programmable gain and a reconfigurable number of channels. The analog front end (AFE) with tunable gain from 20 dB to 54 dB can select the number of channels and combination of channels for reconfigurable signal acquisition capability. The proposed hybrid DC-servo loop is employed for fast electrode DC offset (EDO) cancellation up to 240 mV within 10 ms. Designed in a 0.18-μm CMOS process, the proposed IC achieves input-referred noise (IRN) of 1.12 μVrms at the highest gain mode. The overall system achieves 66.35-dB SNDR with the successive approximation register (SAR) analogto-digital converter (ADC) and consumes 5.74 μW with 0.40 mm2 area per channel.
AB - This paper presents a low-noise, low-power biopotential recording IC with programmable gain and a reconfigurable number of channels. The analog front end (AFE) with tunable gain from 20 dB to 54 dB can select the number of channels and combination of channels for reconfigurable signal acquisition capability. The proposed hybrid DC-servo loop is employed for fast electrode DC offset (EDO) cancellation up to 240 mV within 10 ms. Designed in a 0.18-μm CMOS process, the proposed IC achieves input-referred noise (IRN) of 1.12 μVrms at the highest gain mode. The overall system achieves 66.35-dB SNDR with the successive approximation register (SAR) analogto-digital converter (ADC) and consumes 5.74 μW with 0.40 mm2 area per channel.
KW - Bio-signal sensing
KW - fast EDO cancellation
KW - programmable channel
KW - time division multiplexing
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U2 - 10.1109/ISCAS58744.2024.10558622
DO - 10.1109/ISCAS58744.2024.10558622
M3 - Conference contribution
AN - SCOPUS:85198533582
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
BT - ISCAS 2024 - IEEE International Symposium on Circuits and Systems
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2024 IEEE International Symposium on Circuits and Systems, ISCAS 2024
Y2 - 19 May 2024 through 22 May 2024
ER -