A Zero Suppression Micro-Circuit for Binary Readout CMOS Monolithic Sensors
2009
The EUDET-JRA1 beam telescope and the STAR vertex detector upgrade will be equipped with CMOS pixel sensors allowing to provide high density tracking adapted to intense particle beams. The EUDET sensor Mimosa26, is designed and fabricated in a CMOS-0.35μm Opto process. Its architecture is based on a matrix of 1152x576 pixels, 1152 column-level Analogue-to-Digital Conversion (ADC) by discriminators and a zero suppression circuitry. This paper focused on the data sparsification architecture, allowing a data compression factor between from 10 and 1000, depending on the hit density per frame. It can be extended to the final sensor for the STAR upgrade.
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