A low power time domain ECG interface based on flexible a-IGZO TFTs

Mohammad Zulqarnain; Stefano Stanzione; Jan Laurens P.J. van der Steen; Gerwin H. Gelinck; Kris Myny; Eugenio Cantatore

doi:10.1109/IWASI.2019.8791321

A low power time domain ECG interface based on flexible a-IGZO TFTs

Mohammad Zulqarnain
, Stefano Stanzione
, Jan Laurens P.J. van der Steen
, Gerwin H. Gelinck
, Kris Myny
, Eugenio Cantatore

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

6 Citations (Scopus)

Abstract

This work presents a low power ECG interface for wearable applications, based on unipolar a-IGZO TFTs manufactured on a flexible substrate. The interface consists of a cascaded diode-connected load preamplifier followed by a reset integrator, which is used to convert the voltage signal to a pulse-width modulated (PWM) representation. The output is thus provided as a binary PWM waveform, which can be conveniently sent to a reader device using wireless communication and can be further converted to a digital representation using a simple counter. The flicker noise and the offset are eliminated using an approach similar to correlated double sampling. An input chopper is exploited to alternate the connection between the inputs of the preamplifier for each sample. The output signal is then extracted by subtracting two consecutive samples after conversion to the digital domain. In this way offset and low-frequency noise, which are correlated between the two samples, are effectively cancelled.

Original language	English
Title of host publication	8th International Workshop on Advances in Sensors and Interfaces, IWASI 2019
Place of Publication	Piscataway
Publisher	Institute of Electrical and Electronics Engineers
Pages	205-209
Number of pages	5
ISBN (Electronic)	978-1-7281-0557-4
DOIs	https://doi.org/10.1109/IWASI.2019.8791321
Publication status	Published - 1 Jun 2019
Event	8th International Workshop on Advances in Sensors and Interfaces, IWASI 2019 - Otranto, Italy Duration: 13 Jun 2019 → 14 Jun 2019

Conference

Conference	8th International Workshop on Advances in Sensors and Interfaces, IWASI 2019
Country/Territory	Italy
City	Otranto
Period	13/06/19 → 14/06/19

Funding

This project has partially received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme under grant agreement No 716426 (FLICs project).

Keywords

bio-signal read out
ECG
IGZO
voltage to pulse width conversion

Access to Document

10.1109/IWASI.2019.8791321

Cite this

Zulqarnain, M., Stanzione, S., van der Steen, J. L. P. J., Gelinck, G. H., Myny, K., & Cantatore, E. (2019). A low power time domain ECG interface based on flexible a-IGZO TFTs. In 8th International Workshop on Advances in Sensors and Interfaces, IWASI 2019 (pp. 205-209). Article 8791321 Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/IWASI.2019.8791321

@inproceedings{6c73efd7428346bb8b3cf36352a0e421,

title = "A low power time domain ECG interface based on flexible a-IGZO TFTs",

abstract = "This work presents a low power ECG interface for wearable applications, based on unipolar a-IGZO TFTs manufactured on a flexible substrate. The interface consists of a cascaded diode-connected load preamplifier followed by a reset integrator, which is used to convert the voltage signal to a pulse-width modulated (PWM) representation. The output is thus provided as a binary PWM waveform, which can be conveniently sent to a reader device using wireless communication and can be further converted to a digital representation using a simple counter. The flicker noise and the offset are eliminated using an approach similar to correlated double sampling. An input chopper is exploited to alternate the connection between the inputs of the preamplifier for each sample. The output signal is then extracted by subtracting two consecutive samples after conversion to the digital domain. In this way offset and low-frequency noise, which are correlated between the two samples, are effectively cancelled.",

keywords = "bio-signal read out, ECG, IGZO, voltage to pulse width conversion",

author = "Mohammad Zulqarnain and Stefano Stanzione and \{van der Steen\}, \{Jan Laurens P.J.\} and Gelinck, \{Gerwin H.\} and Kris Myny and Eugenio Cantatore",

year = "2019",

month = jun,

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doi = "10.1109/IWASI.2019.8791321",

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booktitle = "8th International Workshop on Advances in Sensors and Interfaces, IWASI 2019",

publisher = "Institute of Electrical and Electronics Engineers",

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Zulqarnain, M, Stanzione, S, van der Steen, JLPJ, Gelinck, GH, Myny, K & Cantatore, E 2019, A low power time domain ECG interface based on flexible a-IGZO TFTs. in 8th International Workshop on Advances in Sensors and Interfaces, IWASI 2019., 8791321, Institute of Electrical and Electronics Engineers, Piscataway, pp. 205-209, 8th International Workshop on Advances in Sensors and Interfaces, IWASI 2019, Otranto, Italy, 13/06/19. https://doi.org/10.1109/IWASI.2019.8791321

A low power time domain ECG interface based on flexible a-IGZO TFTs. / Zulqarnain, Mohammad; Stanzione, Stefano; van der Steen, Jan Laurens P.J. et al.
8th International Workshop on Advances in Sensors and Interfaces, IWASI 2019. Piscataway: Institute of Electrical and Electronics Engineers, 2019. p. 205-209 8791321.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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T1 - A low power time domain ECG interface based on flexible a-IGZO TFTs

AU - Zulqarnain, Mohammad

AU - Stanzione, Stefano

AU - van der Steen, Jan Laurens P.J.

AU - Gelinck, Gerwin H.

AU - Myny, Kris

AU - Cantatore, Eugenio

PY - 2019/6/1

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N2 - This work presents a low power ECG interface for wearable applications, based on unipolar a-IGZO TFTs manufactured on a flexible substrate. The interface consists of a cascaded diode-connected load preamplifier followed by a reset integrator, which is used to convert the voltage signal to a pulse-width modulated (PWM) representation. The output is thus provided as a binary PWM waveform, which can be conveniently sent to a reader device using wireless communication and can be further converted to a digital representation using a simple counter. The flicker noise and the offset are eliminated using an approach similar to correlated double sampling. An input chopper is exploited to alternate the connection between the inputs of the preamplifier for each sample. The output signal is then extracted by subtracting two consecutive samples after conversion to the digital domain. In this way offset and low-frequency noise, which are correlated between the two samples, are effectively cancelled.

AB - This work presents a low power ECG interface for wearable applications, based on unipolar a-IGZO TFTs manufactured on a flexible substrate. The interface consists of a cascaded diode-connected load preamplifier followed by a reset integrator, which is used to convert the voltage signal to a pulse-width modulated (PWM) representation. The output is thus provided as a binary PWM waveform, which can be conveniently sent to a reader device using wireless communication and can be further converted to a digital representation using a simple counter. The flicker noise and the offset are eliminated using an approach similar to correlated double sampling. An input chopper is exploited to alternate the connection between the inputs of the preamplifier for each sample. The output signal is then extracted by subtracting two consecutive samples after conversion to the digital domain. In this way offset and low-frequency noise, which are correlated between the two samples, are effectively cancelled.

KW - bio-signal read out

KW - ECG

KW - IGZO

KW - voltage to pulse width conversion

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BT - 8th International Workshop on Advances in Sensors and Interfaces, IWASI 2019

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ER -

A low power time domain ECG interface based on flexible a-IGZO TFTs

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Keywords

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