TY - GEN
T1 - A Fast Wake-Up and High Accuracy Sensor Interface by Synchronous Sampling with Power-Efficient Switching Regulator
AU - Fuketa, Yuya
AU - Tatehora, Kohei
AU - Shiiki, Yohsuke
AU - Nakagawa, Shuya
AU - Ishikuro, Hiroki
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/8/9
Y1 - 2021/8/9
N2 - This paper proposes a high-accuracy readout system with a high-efficient DC-DC converter. Thanks to a switching DC-DC converter with high conversion efficiency, the power loss in a regulator can be reduced. In the proposed system, sampling is performed using a synchronization signal generated from the switching regulator to avoid deterioration of readout accuracy caused by the ripple noise of the switching converter. Since the proposed technique does not require a large capacitor for ripple reduction, the wake-up time can be reduced, which is suitable for IoT devices operating intermittently. A prototype system developed in this work has achieved a reduction in sensor resistance readout variation to 0.006% while maintaining a high-speed wake-up.
AB - This paper proposes a high-accuracy readout system with a high-efficient DC-DC converter. Thanks to a switching DC-DC converter with high conversion efficiency, the power loss in a regulator can be reduced. In the proposed system, sampling is performed using a synchronization signal generated from the switching regulator to avoid deterioration of readout accuracy caused by the ripple noise of the switching converter. Since the proposed technique does not require a large capacitor for ripple reduction, the wake-up time can be reduced, which is suitable for IoT devices operating intermittently. A prototype system developed in this work has achieved a reduction in sensor resistance readout variation to 0.006% while maintaining a high-speed wake-up.
KW - DC-DC converter
KW - IoT
KW - analog-front-end
KW - intermittent
KW - sensor node
KW - switching regulator
KW - synchronous sampling
UR - http://www.scopus.com/inward/record.url?scp=85115615813&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85115615813&partnerID=8YFLogxK
U2 - 10.1109/MWSCAS47672.2021.9531820
DO - 10.1109/MWSCAS47672.2021.9531820
M3 - Conference contribution
AN - SCOPUS:85115615813
T3 - Midwest Symposium on Circuits and Systems
SP - 154
EP - 157
BT - 2021 IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2021 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2021
Y2 - 9 August 2021 through 11 August 2021
ER -