Integrating data converters for picoampere currents from electrochemical transducers

Madalina Breten; Torsten Lehmann; Erik Bruun

doi:10.1109/ISCAS.2000.857591

Integrating data converters for picoampere currents from electrochemical transducers

Madalina Breten, Torsten Lehmann, Erik Bruun

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

This paper describes a current mode A/D converter designed for a maximum input current range of 5 nA and a resolution of the order of 1 pA. The converter is designed for a potentiostat for amperometric chemical sensors and provides a constant polarization voltage for the measuring electrode. A prototype chip using the dual slope conversion method has been fabricated in a 0.7 μm CMOS process. Experimental results from this converter are reported. Design problems and limitations of the converter are discussed and a new conversion technique providing a larger dynamic range and easy calibration is proposed.

Original language	English
Title of host publication	The 2000 IEEE International Symposium on Circuits and Systems : Proceedings
Volume	5
Place of Publication	Geneva
Publisher	IEEE
Publication date	2000
Pages	709-712
ISBN (Print)	0-7803-5482-6
DOIs	https://doi.org/10.1109/ISCAS.2000.857591
Publication status	Published - 2000
Event	2000 IEEE International Symposium on Circuits and Systems - Geneva, Switzerland Duration: 28 May 2000 → 31 May 2000 https://ieeexplore.ieee.org/xpl/conhome/6910/proceeding

Conference

Conference	2000 IEEE International Symposium on Circuits and Systems
Country/Territory	Switzerland
City	Geneva
Period	28/05/2000 → 31/05/2000
Internet address	https://ieeexplore.ieee.org/xpl/conhome/6910/proceeding

Bibliographical note

Copyright: 2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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title = "Integrating data converters for picoampere currents from electrochemical transducers",

abstract = "This paper describes a current mode A/D converter designed for a maximum input current range of 5 nA and a resolution of the order of 1 pA. The converter is designed for a potentiostat for amperometric chemical sensors and provides a constant polarization voltage for the measuring electrode. A prototype chip using the dual slope conversion method has been fabricated in a 0.7 μm CMOS process. Experimental results from this converter are reported. Design problems and limitations of the converter are discussed and a new conversion technique providing a larger dynamic range and easy calibration is proposed.",

author = "Madalina Breten and Torsten Lehmann and Erik Bruun",

note = "Copyright: 2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE; 2000 IEEE International Symposium on Circuits and Systems, ISCAS 2000 ; Conference date: 28-05-2000 Through 31-05-2000",

year = "2000",

doi = "10.1109/ISCAS.2000.857591",

language = "English",

isbn = "0-7803-5482-6",

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pages = "709--712",

booktitle = "The 2000 IEEE International Symposium on Circuits and Systems",

publisher = "IEEE",

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url = "https://ieeexplore.ieee.org/xpl/conhome/6910/proceeding",

}

Breten, M, Lehmann, T & Bruun, E 2000, Integrating data converters for picoampere currents from electrochemical transducers. in The 2000 IEEE International Symposium on Circuits and Systems: Proceedings. vol. 5, IEEE, Geneva, pp. 709-712, 2000 IEEE International Symposium on Circuits and Systems, Geneva, Switzerland, 28/05/2000. https://doi.org/10.1109/ISCAS.2000.857591

TY - GEN

T1 - Integrating data converters for picoampere currents from electrochemical transducers

AU - Breten, Madalina

AU - Lehmann, Torsten

AU - Bruun, Erik

N1 - Copyright: 2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

PY - 2000

Y1 - 2000

N2 - This paper describes a current mode A/D converter designed for a maximum input current range of 5 nA and a resolution of the order of 1 pA. The converter is designed for a potentiostat for amperometric chemical sensors and provides a constant polarization voltage for the measuring electrode. A prototype chip using the dual slope conversion method has been fabricated in a 0.7 μm CMOS process. Experimental results from this converter are reported. Design problems and limitations of the converter are discussed and a new conversion technique providing a larger dynamic range and easy calibration is proposed.

AB - This paper describes a current mode A/D converter designed for a maximum input current range of 5 nA and a resolution of the order of 1 pA. The converter is designed for a potentiostat for amperometric chemical sensors and provides a constant polarization voltage for the measuring electrode. A prototype chip using the dual slope conversion method has been fabricated in a 0.7 μm CMOS process. Experimental results from this converter are reported. Design problems and limitations of the converter are discussed and a new conversion technique providing a larger dynamic range and easy calibration is proposed.

U2 - 10.1109/ISCAS.2000.857591

DO - 10.1109/ISCAS.2000.857591

M3 - Article in proceedings

SN - 0-7803-5482-6

VL - 5

SP - 709

EP - 712

BT - The 2000 IEEE International Symposium on Circuits and Systems

PB - IEEE

CY - Geneva

T2 - 2000 IEEE International Symposium on Circuits and Systems

Y2 - 28 May 2000 through 31 May 2000

ER -

Integrating data converters for picoampere currents from electrochemical transducers

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