4 November 2010 3000 pixel linear InGaAs sensor for the Proba-V satellite
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We report on the design and development of the large linear SWIR focal plane arrays to be deployed in the multispectral instrument of the Proba-V satellite. These sensors are based on mechanical butting of three InGaAs photodiode arrays with 1024 pixels on 25 μm pitch, forming a nearly continuous line of 3072 pixels. A new read-out integrated circuit (ROIC) for photocurrent integration and signal multiplexing with 1024 inputs was designed and manufactured by stitching due to the length of the chip. The ROIC (XRO3508) includes both correlated double sampling (CDS) and autozero features, enabling a very low Dark Signal Non Uniformity (DSNU) and Photoresponse Non-Uniformity (PRNU) less than 0.5% of the available signal range.
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Jonas Bentell, Jan Vermeiren, Peet Verbeke, Alexandre de Kerckhove, Luis Rodriguez, Thierry Colin, Bob Grietens, "3000 pixel linear InGaAs sensor for the Proba-V satellite", Proc. SPIE 7862, Earth Observing Missions and Sensors: Development, Implementation, and Characterization, 786206 (4 November 2010); doi: 10.1117/12.869647; https://doi.org/10.1117/12.869647

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