16-channel wide-range VLSI potentiostat array

Milutin Stanacevic; Kartikeya Murari; Gert Cauwenberghs; Nitish Thakor

16-channel wide-range VLSI potentiostat array

Milutin Stanacevic, Kartikeya Murari, Gert Cauwenberghs, Nitish Thakor

School of Medicine

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

Abstract

A 16-Channel current-measuring VLSI sensor array system for electrochemical detection of electroactive neurotransmilers like dopamine and nitric-oxide is presented. The designed ΛDC architecture is first-order single bit delta-sigma modulator with programmable over-sampling ratio. The modulation of feedback duty-cycle in modulator design enables choice of current range in accordance to magnitude and time constant of signal leading to current range that spans over six orders of magnitude and sensitivity up to picoamperes at hundred millisecond conversion time with power consumption of 300 μW. A 3mm × 3mm chip in 0.5 μm CMOS technology is used for real-time multi-channel acquisition of neuro-transmitter concentration.

Original language	English (US)
Title of host publication	2004 IEEE International Workshop on Biomedical Circuits and Systems
Pages	S1.7.INV-17-S1.7.INV-20
State	Published - Dec 1 2004
Event	2004 IEEE International Workshop on Biomedical Circuits and Systems - Singapore, Singapore Duration: Dec 1 2004 → Dec 3 2004

Publication series

Name	2004 IEEE International Workshop on Biomedical Circuits and Systems

Other

Other	2004 IEEE International Workshop on Biomedical Circuits and Systems
Country/Territory	Singapore
City	Singapore
Period	12/1/04 → 12/3/04

ASJC Scopus subject areas

Engineering(all)

Cite this

16-channel wide-range VLSI potentiostat array. / Stanacevic, Milutin; Murari, Kartikeya; Cauwenberghs, Gert et al.

2004 IEEE International Workshop on Biomedical Circuits and Systems. 2004. p. S1.7.INV-17-S1.7.INV-20 (2004 IEEE International Workshop on Biomedical Circuits and Systems).

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

Stanacevic, M, Murari, K, Cauwenberghs, G & Thakor, N 2004, 16-channel wide-range VLSI potentiostat array. in 2004 IEEE International Workshop on Biomedical Circuits and Systems. 2004 IEEE International Workshop on Biomedical Circuits and Systems, pp. S1.7.INV-17-S1.7.INV-20, 2004 IEEE International Workshop on Biomedical Circuits and Systems, Singapore, Singapore, 12/1/04.

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N2 - A 16-Channel current-measuring VLSI sensor array system for electrochemical detection of electroactive neurotransmilers like dopamine and nitric-oxide is presented. The designed ΛDC architecture is first-order single bit delta-sigma modulator with programmable over-sampling ratio. The modulation of feedback duty-cycle in modulator design enables choice of current range in accordance to magnitude and time constant of signal leading to current range that spans over six orders of magnitude and sensitivity up to picoamperes at hundred millisecond conversion time with power consumption of 300 μW. A 3mm × 3mm chip in 0.5 μm CMOS technology is used for real-time multi-channel acquisition of neuro-transmitter concentration.

AB - A 16-Channel current-measuring VLSI sensor array system for electrochemical detection of electroactive neurotransmilers like dopamine and nitric-oxide is presented. The designed ΛDC architecture is first-order single bit delta-sigma modulator with programmable over-sampling ratio. The modulation of feedback duty-cycle in modulator design enables choice of current range in accordance to magnitude and time constant of signal leading to current range that spans over six orders of magnitude and sensitivity up to picoamperes at hundred millisecond conversion time with power consumption of 300 μW. A 3mm × 3mm chip in 0.5 μm CMOS technology is used for real-time multi-channel acquisition of neuro-transmitter concentration.

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M3 - Conference contribution

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ER -

16-channel wide-range VLSI potentiostat array

Abstract

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