Impact of the time sampling on the noise of a H2RG (2K × 2K) Near-IR detector: Comparison of SIDECAR™ ASIC and hybrid readouts

摘要

The readout noise of a H2RC HgCdTe NIR detector from Teledyne is measured at a temperature T= 105 K. In a previous work, we have analysed the evolution of the readout noise as a function of the number of reads in terms of the frequency power spectrum of the noise with our in-house hybrid readout electronics. The new measurements with the SIDECAR™ ASIC provided by Teledyne Imaging Sensors are compared to the previous ones. The noise power spectrum found can be used in a wide range of timing conditions and allows to predict quantitatively the 1/f effects arising from different time samplings. In contrast with most previous publications, we investigate the time properties of single pixel signals rather than the spatial correlations.