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Compact FPGA-based elaboration platform for wide-bandwidth electrochemical measurements

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5 Author(s)
Carminati, M. ; Dipt. di Elettron. e Inf., Politec. di Milano, Milano, Italy ; Rottigni, A. ; Alagna, D. ; Ferrari, G.
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A novel mixed-signal generation, acquisition and elaboration motherboard for electrochemical sensing is presented. This compact USB-controlled instrument is based on a FPGA for fast real-time execution of multiple measurement families: amperometry, voltammetry and impedance spectroscopy in particular. A digital dual-phase lock-in demodulator based on an internal DDS/PLL has been embedded with a custom analog front-end to provide an extended frequency range up to 10MHz. The design and experimental characterization of the full instrument encompassing fast (14bit, 80MSa/s) and auxiliary precise (18bit, 100kSa/s) channels are here discussed.

Published in:

Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International

Date of Conference:

13-16 May 2012