Characterization of HAWAII-2RG detector and SIDECAR ASIC for the Euclid mission at ESA

摘要

In the frame work of the European Space Agency's Cosmic Vision program, the Euclid mission has the objective to mapthe geometry of the Dark Universe. Galaxies and clusters of galaxies will be observed in the visible and near-infraredwavelengths by an imaging and spectroscopic channel.For the Near Infrared Spectrometer instrument (NISP), the state-of-the-art HAWAII-2RG detectors will be used,associated with the SIDECAR ASIC readout electronic which will perform the image frame acquisitions.To characterize and validate the performance of these detectors, a test bench has been designed, tested and validated.This publication will present preliminary measurements on dark current, read noise, conversion gain and powerconsumption, In summary, the following results have been obtained in our system: dark current of 0.014 esup-/sup/s/pixel at82K; readout noise of 23 esup-/sup for a single CDS pair and 5.4esup-/sup for a Fowler(32); a total electric power consumption of 203mW in LVDS (excluding I/O power) mode.The SIDECAR ASIC has also been characterized separately at room temperature. Two references voltages,VPreAmpRef1 and VrefMain, used to adjust the offset of the pre-amp DAC has been studied. The reset voltage, Vsubreset/sub,was measured to have a root mean square stability of 22μV over 15 minutes and a root mean square stability value of 24μV over a 15 hours measurement period. An offset between set value and measured value of around 60mV for low setvoltages has been noticed. The behavior of VPreAmpRef1 and VrefMain with a adjustable external input voltage hasbeen conducted in order to tune these two biases to cover the desired input range with the best linearity.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.