CMOS-based on-chip electrochemical sensor

Tao Luo; Hongyi Wang; Hongjiang Song; Jennifer Blain Christen

doi:10.1109/BioCAS.2014.6981731

CMOS-based on-chip electrochemical sensor

Tao Luo, Hongyi Wang, Hongjiang Song, Jennifer Blain Christen

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

6 Scopus citations

Abstract

We describe an integrated CMOS electrochemical sensor with on-chip electrodes and packaging. The CMOS chip was fabricated in a standard 0.5 μm CMOS process, and it contains potentiostat circuits with integrated array of three electrode cells. In the potentiostat circuit, we designed high performance folded cascode class-AB operational amplifiers with rail to rail input and output suitable for low power consumption and strong drive capability. The 1.5 mm × 3 mm potentiostat array chip operates from a 5 V supply at 45 μA. A gold electrode array was made on the surface of the CMOS chip using a contact photolithographic process. For compatibility with liquid test environments a packaging approach was developed. The electrochemical sensor with on-chip electrodes was characterized by using cyclic voltammetry (CV) with potassium ferricyanide.

Original language	English (US)
Title of host publication	IEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	336-339
Number of pages	4
ISBN (Electronic)	9781479923465
DOIs	https://doi.org/10.1109/BioCAS.2014.6981731
State	Published - Dec 9 2014
Event	10th IEEE Biomedical Circuits and Systems Conference, BioCAS 2014 - Lausanne, Switzerland Duration: Oct 22 2014 → Oct 24 2014

Publication series

Name	IEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings

Other

Other	10th IEEE Biomedical Circuits and Systems Conference, BioCAS 2014
Country/Territory	Switzerland
City	Lausanne
Period	10/22/14 → 10/24/14

ASJC Scopus subject areas

Hardware and Architecture
Biomedical Engineering

Access to Document

10.1109/BioCAS.2014.6981731

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Luo, T., Wang, H., Song, H., & Blain Christen, J. (2014). CMOS-based on-chip electrochemical sensor. In IEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings (pp. 336-339). Article 6981731 (IEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/BioCAS.2014.6981731

CMOS-based on-chip electrochemical sensor. / Luo, Tao; Wang, Hongyi; Song, Hongjiang et al.
IEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2014. p. 336-339 6981731 (IEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings).

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

Luo, T, Wang, H, Song, H & Blain Christen, J 2014, CMOS-based on-chip electrochemical sensor. in IEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings., 6981731, IEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings, Institute of Electrical and Electronics Engineers Inc., pp. 336-339, 10th IEEE Biomedical Circuits and Systems Conference, BioCAS 2014, Lausanne, Switzerland, 10/22/14. https://doi.org/10.1109/BioCAS.2014.6981731

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abstract = "We describe an integrated CMOS electrochemical sensor with on-chip electrodes and packaging. The CMOS chip was fabricated in a standard 0.5 μm CMOS process, and it contains potentiostat circuits with integrated array of three electrode cells. In the potentiostat circuit, we designed high performance folded cascode class-AB operational amplifiers with rail to rail input and output suitable for low power consumption and strong drive capability. The 1.5 mm × 3 mm potentiostat array chip operates from a 5 V supply at 45 μA. A gold electrode array was made on the surface of the CMOS chip using a contact photolithographic process. For compatibility with liquid test environments a packaging approach was developed. The electrochemical sensor with on-chip electrodes was characterized by using cyclic voltammetry (CV) with potassium ferricyanide.",

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N2 - We describe an integrated CMOS electrochemical sensor with on-chip electrodes and packaging. The CMOS chip was fabricated in a standard 0.5 μm CMOS process, and it contains potentiostat circuits with integrated array of three electrode cells. In the potentiostat circuit, we designed high performance folded cascode class-AB operational amplifiers with rail to rail input and output suitable for low power consumption and strong drive capability. The 1.5 mm × 3 mm potentiostat array chip operates from a 5 V supply at 45 μA. A gold electrode array was made on the surface of the CMOS chip using a contact photolithographic process. For compatibility with liquid test environments a packaging approach was developed. The electrochemical sensor with on-chip electrodes was characterized by using cyclic voltammetry (CV) with potassium ferricyanide.

AB - We describe an integrated CMOS electrochemical sensor with on-chip electrodes and packaging. The CMOS chip was fabricated in a standard 0.5 μm CMOS process, and it contains potentiostat circuits with integrated array of three electrode cells. In the potentiostat circuit, we designed high performance folded cascode class-AB operational amplifiers with rail to rail input and output suitable for low power consumption and strong drive capability. The 1.5 mm × 3 mm potentiostat array chip operates from a 5 V supply at 45 μA. A gold electrode array was made on the surface of the CMOS chip using a contact photolithographic process. For compatibility with liquid test environments a packaging approach was developed. The electrochemical sensor with on-chip electrodes was characterized by using cyclic voltammetry (CV) with potassium ferricyanide.

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CMOS-based on-chip electrochemical sensor

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