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Comparison of continuous time and discrete time noise filtering is presented. Two sets of measurements have been performed: one with the classical analog semi-Gaussian shaper (CR-RC2), the other with M-CDS (Multi-Correlated Double Sampling). The Charge Sensitive Amplifier used in the measurements is optimized for input capacitance of 1 pF and detector dark current below 5 pA. With the analog shaper...
Our group is currently developing a new project dedicated to the design of new Cd(Zn)Te spectro-imaging systems for future space borne astrophysics missions. The main goal is to build a spectro-imaging system with matrix ASIC hybridized to pixelated Cd(Zn)Te detector with typical pixel of 300 µm pitch and typical energy resolution of 0.5 keV at 60 keV. Before designing a complete matrix of readout...
Since few years, our group is developing a family of ASICs for space applications, named IDeF-X for Imaging Detector Front-end. IDeF-X HD is the new member of the IDeF-X family. It has been optimized for the readout of 16 x 16 pixels CdTe or CdZnTe pixelated detectors to build a new low power Caliste 256 module. This micro gamma-camera will be the elementary unit of the MAC SI (Modular Assembly of...
This paper presents the contribution of custom instructions in image processing and more precisely in our iris recognition application. Benchmarks, comparisons and results between general purpose processor (GPP), custom instruction and dedicated IP show the interest of using custom instructions.
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