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dc.contributor.authorGomes, J. M.por
dc.contributor.authorCorreia, J. H.por
dc.contributor.authorCarmo, João Paulo Pereirapor
dc.description.abstractThis paper presents a Low-Cost Flexible-Platform (LCFP) for measuring and characterizing photodetectors. This LCFP can characterize simultaneously up to 16 photodetectors and is composed by two main electronic circuit boards: a Transimpedance Amplifier Board (TIAB) and a Development Board (DevB). The TIAB was designed and optimized to reduce the noise increase, in order to convert photocurrents into voltages and at the same time, allowing the gain selection between one of the three values: 1 × 105 (low-gain, LG), 1 × 106 (medium-gain, MG) and 1 × 107 (high-gain, HG). The DevB is composed by 16 analog inputs, 54 digital inputs/outputs and an internal Analog to Digital Converter (ADC). It is possible to digitally change the Upper End Voltage (UEV) of the ADC's range to voltages below +5 V. The DevB can convert into the digital domain each one of the 16 analog signals from the TIAB with a resolution of 48.9 nA, 4.9 nA and 0.5 nA for the highest value of UEV (+5 V) and when either LG, MG or HG is selected, respectively. The measured data can be acquired in real-time with LabView software, which allows the real-time monitoring of the photocurrents for individual elements in the photodetector both through a numeric and graphical display. The light intensity can be defined by 8 digital outputs allowing 256 light intensity increments/steps from 0 to a maximum defined (by the lamp's manufacturer) light intensity. This LCFP can be used in industry to make quality control, e.g., when different test conditions are applied to the optical sensors/photodetectors and the user/customer need to quickly check if the response or performance is acceptable or resulted on any significant drifts. All these features combined with the low-cost under 1400 € makes this LCFP a suitable tool to quickly evaluate the performance of optical sensors/photodetectors.por
dc.description.sponsorshipThis work was sponsored by the Brazilian agency National Council of Scientific Research (Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq) under the grant 400110/2014-8: Ciência sem Fronteiras/Chamada de projetos MEC/MCTI/CAPES/CNPQ/FAPS – Bolsa Pesquisador Visitante Especial (PVE) 2014.por
dc.subjectCharacterization setuppor
dc.subjectPhotodetectors characterizationpor
dc.subjectCMOS photodetectorspor
dc.titleA Low-Cost Flexible-Platform (LCFP) for characterization of photodetectorspor
dc.subject.wosScience & Technology-
sdum.journalMeasurement: Journal of the International Measurement Confederationpor
Appears in Collections:CMEMS - Artigos em revistas internacionais/Papers in international journals

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