Optimisation de blocs constitutifs d’un convertisseur A/N pipeline en technologie CMOS 0.18µm pour utilisation en environnement spatial

Lucas Perbet 1
1 LAAS-OSE - Équipe Optoélectronique pour les Systèmes Embarqués
LAAS - Laboratoire d'analyse et d'architecture des systèmes [Toulouse]
Abstract : Imaging is a major issue in the observation of the Universe and the Earth from space, whether in the visible domain or not. Thus, in the spatial field, data is often gathered by a CCD (charge-Coupled Device) sensor, that supplies analog voltages to an Analog-to-Digital Converter (ADC), which outputs will be delivered to a processing chain, and then sent to earth. Consequently, ADCs are key elements in satellite imaging. Their precision and speed will indeed define the quality and the representativeness of the binary signal. It is then crucial to perform a high quality (speed & precision) conversion of the data, while making sure that the ADC can cope with the harsh irradiative environment. The purpose of this thesis is to improve the robustness to the space environment (hardening), while optimizing the performances, of several elementary devices that compose a 14 bits, 5MS/s pipeline ADC, made with the XFAB 180nm technology. The three targeted functions are the switches (especially the problems linked to coping with the charge injection problems in a space environment), the comparators (hardening) and the switched-capacitor amplifier (gain boosting through a predictive architecture with no penalty on the power consumption).
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Micro et nanotechnologies/Microélectronique. INP Toulouse, 2017. Français
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Lucas Perbet. Optimisation de blocs constitutifs d’un convertisseur A/N pipeline en technologie CMOS 0.18µm pour utilisation en environnement spatial. Micro et nanotechnologies/Microélectronique. INP Toulouse, 2017. Français. 〈tel-01524918〉

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