FPAAs have recently been introduced to reduce analog design costs and bridge the gap between ASICs and circuits made of standard-parts. Here, their applicability to capacitive sensing is investigated. Switched-mode FPAAs were not originally introduced for the readout of elementary sensors or their desensitization from parasitics. Nonetheless, we show that specific techniques can make them up to the task of reading capacitance variations in the tens fF range. We also show that FPAA sensor interfaces can achieve automatic, trimmer-free calibration by FPAA reconfiguration. We conclude by illustrating a sample application as a proof-of-concept of the proposed techniques.

CALLEGARI S., MERENDINO G., GOLFARELLI A., ZAGNONI M., TARTAGNI M. (2006). Applicability of Field Programmable Analog Arrays to capacitive sensing in the sub-pF range. ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, 47, 39-51 [10.1007/s10470-006-2776-1].

Applicability of Field Programmable Analog Arrays to capacitive sensing in the sub-pF range

CALLEGARI, SERGIO;GOLFARELLI, ALESSANDRO;ZAGNONI, MICHELE;TARTAGNI, MARCO
2006

Abstract

FPAAs have recently been introduced to reduce analog design costs and bridge the gap between ASICs and circuits made of standard-parts. Here, their applicability to capacitive sensing is investigated. Switched-mode FPAAs were not originally introduced for the readout of elementary sensors or their desensitization from parasitics. Nonetheless, we show that specific techniques can make them up to the task of reading capacitance variations in the tens fF range. We also show that FPAA sensor interfaces can achieve automatic, trimmer-free calibration by FPAA reconfiguration. We conclude by illustrating a sample application as a proof-of-concept of the proposed techniques.
2006
CALLEGARI S., MERENDINO G., GOLFARELLI A., ZAGNONI M., TARTAGNI M. (2006). Applicability of Field Programmable Analog Arrays to capacitive sensing in the sub-pF range. ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, 47, 39-51 [10.1007/s10470-006-2776-1].
CALLEGARI S.; MERENDINO G.; GOLFARELLI A.; ZAGNONI M.; TARTAGNI M.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/8589
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