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A 64-channel, 1.1-pA-accurate On-chip Potentiostat for Parallel Electrochemical Monitoring

Boekbijdrage - Boekhoofdstuk Conferentiebijdrage

Electrochemical monitoring is crucial for both industrial applications, such as microbial electrolysis and corrosion monitoring as well as consumer applications such as personal health monitoring. Yet, state-of-the-art integrated potentiostat monitoring devices have few parallel channels with limited flexibility due to their channel architecture. This work presents a novel, widely scalable channel architecture using a switch capacitor based Howland current pump and a digital potential controller. An integrated, 64-channel CMOS potentiostat array has been fabricated. Each individual channel has a dynamic current range of 120dB with 1.1pA precision with up to 100kHz bandwidth. The on-chip working electrodes are post-processed with gold to ensure (bio)electrochemical compatibility.
Boek: ESSCIRC 2019 - IEEE 45th European Solid State Circuits Conference (ESSCIRC)
Pagina's: 317 - 320
ISBN:978-1-7281-1550-4
Jaar van publicatie:2019
BOF-keylabel:ja
IOF-keylabel:ja
Authors from:Higher Education
Toegankelijkheid:Open