@inproceedings{a6be76238abb42edbda783a4c73cc065,
title = "High-resolution auto-balancing wheatstone-bridge with successive approximation of Δ Σ-Modulated digitally controlled variable resistor",
abstract = "This paper describes a high-resolution, highly linear, low power amp-less sensor interface. A Wheatstone-bridge with ΔΣ-modulated digitally controlled variable resistor is proposed. The proposed bridge is automatically balanced by successive approximation (SA) of the digitally controlled resistor, which can eliminate power consuming amplifiers and ADCs. To overcome conversion speed limitation caused by settling time of each SA step, the output differential voltage of the bridge is shorted in advance to the comparison phase of each SA step. A developed prototype system achieved 9.68 bit resolution in target resistance range of three orders of magnitude and conversion speed improvement by 66%.",
keywords = "Auto-balancing, IoT, Sensor interface, Successive approximation, Wheatstone-bridge, ΔΣ-modulation",
author = "Takumi Miyazaki and Shuya Nakagawa and Hiroki Ishikuro",
year = "2019",
month = nov,
doi = "10.1109/ICECS46596.2019.8965187",
language = "English",
series = "2019 26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "474--477",
booktitle = "2019 26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019",
note = "26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019 ; Conference date: 27-11-2019 Through 29-11-2019",
}