An Amp-Less Time-Domain AC Bridge for Impedance Spectroscopy with 1-bit \DeltaSigma DAC

Yuya Maekawa; Hiroki Ishikuro

doi:10.1109/ICECS53924.2021.9665536

An Amp-Less Time-Domain AC Bridge for Impedance Spectroscopy with 1-bit \DeltaSigma DAC

Yuya Maekawa, Hiroki Ishikuro

Department of Electronics and Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper proposes a time-domain AC bridge for impedance spectroscopy. In the proposed system, the AC signal source consists of switches and a digitalDelta\Sigma modulator, and an oscillator and a counter are used to detect the voltage error for least-mean-square algorithm for auto-balancing. Due to the noise shaping of theDelta\Sigma DAC and the low-pass filter characteristics of the VCO, it is possible to read the impedance without an amplifier. The developed prototype of the proposed system achieved precise complex-impedance measurement from 50 Hz to 10 kHz input signal within 0.33% accuracy.

Original language	English
Title of host publication	2021 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728182810
DOIs	https://doi.org/10.1109/ICECS53924.2021.9665536
Publication status	Published - 2021
Event	28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021 - Dubai, United Arab Emirates Duration: 2021 Nov 28 → 2021 Dec 1

Publication series

Name	2021 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021 - Proceedings

Conference

Conference	28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021
Country/Territory	United Arab Emirates
City	Dubai
Period	21/11/28 → 21/12/1

Keywords

AC bridge
\Delta\Sigma modulation
impedance spectroscopy
time-domain

ASJC Scopus subject areas

Artificial Intelligence
Energy Engineering and Power Technology
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Instrumentation

Access to Document

10.1109/ICECS53924.2021.9665536

Cite this

Maekawa, Y., & Ishikuro, H. (2021). An Amp-Less Time-Domain AC Bridge for Impedance Spectroscopy with 1-bit \DeltaSigma DAC. In 2021 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021 - Proceedings (2021 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICECS53924.2021.9665536

An Amp-Less Time-Domain AC Bridge for Impedance Spectroscopy with 1-bit \DeltaSigma DAC. / Maekawa, Yuya; Ishikuro, Hiroki.

2021 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. (2021 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Maekawa, Y & Ishikuro, H 2021, An Amp-Less Time-Domain AC Bridge for Impedance Spectroscopy with 1-bit \DeltaSigma DAC. in 2021 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021 - Proceedings. 2021 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021 - Proceedings, Institute of Electrical and Electronics Engineers Inc., 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021, Dubai, United Arab Emirates, 21/11/28. https://doi.org/10.1109/ICECS53924.2021.9665536

Maekawa Y, Ishikuro H. An Amp-Less Time-Domain AC Bridge for Impedance Spectroscopy with 1-bit \DeltaSigma DAC. In 2021 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2021. (2021 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021 - Proceedings). doi: 10.1109/ICECS53924.2021.9665536

Maekawa, Yuya ; Ishikuro, Hiroki. / An Amp-Less Time-Domain AC Bridge for Impedance Spectroscopy with 1-bit \DeltaSigma DAC. 2021 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. (2021 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2021 - Proceedings).

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title = "An Amp-Less Time-Domain AC Bridge for Impedance Spectroscopy with 1-bit \DeltaSigma DAC",

abstract = "This paper proposes a time-domain AC bridge for impedance spectroscopy. In the proposed system, the AC signal source consists of switches and a digitalDelta\Sigma modulator, and an oscillator and a counter are used to detect the voltage error for least-mean-square algorithm for auto-balancing. Due to the noise shaping of theDelta\Sigma DAC and the low-pass filter characteristics of the VCO, it is possible to read the impedance without an amplifier. The developed prototype of the proposed system achieved precise complex-impedance measurement from 50 Hz to 10 kHz input signal within 0.33% accuracy. ",

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AB - This paper proposes a time-domain AC bridge for impedance spectroscopy. In the proposed system, the AC signal source consists of switches and a digitalDelta\Sigma modulator, and an oscillator and a counter are used to detect the voltage error for least-mean-square algorithm for auto-balancing. Due to the noise shaping of theDelta\Sigma DAC and the low-pass filter characteristics of the VCO, it is possible to read the impedance without an amplifier. The developed prototype of the proposed system achieved precise complex-impedance measurement from 50 Hz to 10 kHz input signal within 0.33% accuracy.

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An Amp-Less Time-Domain AC Bridge for Impedance Spectroscopy with 1-bit \DeltaSigma DAC

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

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