logo EDITE Gérard SOU
Gérard SOU
État académique
Thèse soutenue
Titulaire d'une HDR (ou équivalent) 2009-12-10
Laboratoire: personnel permanent
Direction de thèses (depuis 2007)
Ellipse bleue: doctorant, ellipse jaune: docteur, rectangle vert: permanent, rectangle jaune: HDR. Trait vert: encadrant de thèse, trait bleu: directeur de thèse, pointillé: jury d'évaluation à mi-parcours ou jury de thèse.
Productions scientifiques
Current Conveyor with Very Low Output Impedance Voltage Buffer for Laboratory Instrumentation
This paper presents the design and implementation of second generation current conveyor CCII- in 0.35μm CMOS process. In the design, we intended to achieve very low output impedance of voltage buffer over wide frequency range, in order to comply with high requirements for laboratory instrumentation. Selected approach relies on the optimization of voltage buffer, which is composed of minimal amount of transistors. This allows considerably reducing all parasitic capacitances in the circuit and achieving very low output impedance in units of ohms at frequencies up to 10 MHz. In addition, the solution exhibits high driving capability of both X and Z output terminals.
iEEE International Symposium on Circuits and Systems Conference ISCAS 2010conference proceeding 2010-07-19
A Very Low 1/f Noise ASIC Preamplifier for High Sensitivity Search-coil Magnetometers
European Conference on Magnetic Sensors & Actuators (EMSA 2010)conference, seminar, workshop communication 2010-07-04
Capture électronique des données pour le suivi médical personnalisé
Le projet CapElecMed coordonné par Vectrawave est réalisé dans le cadre de l'appel ANR-TecScan en partenariat avec l'UPMC-L2E, Pitié-Salpêtrière, NXP, Memscap, HEGP, et iTTEK. Son objectif est de récupérer les données médicales d'un patient simplement en pénétrant dans la chambre d'hospitalisation ou à partir du lieu de résidence. Le lutrin HOPI est un chariot équipé d'un système informatique avec ses interfaces d'entrées et sorties compatibles avec l'environnement hospitalier. Ce lutrin possède les équipements d'acquisition des données médicales, issues des capteurs portés par le patient, au moyen d'une liaison RFID, Bluetooth, Zigbee... Les capteurs testés dans ce projet sont, d'une part, un capteur de température ingéré qui transite dans le corps humain et, d'autre part, un capteur de pression implanté. Le lutrin collecte les informations et les enregistre de façon à ce qu'elles soient incluses dans le dossier médical personnalisé (DMP) du patient. Ce dernier sera dans le futur le seul système qui regroupera toutes les informations sur le patient. Il servira en particulier pour des sujets ayant des pathologies multiples pour lesquels la traçabilité et l'historique détaillé des traitements sont nécessaires.
IRBM (Ingénierie et Recherche Biomédicale) Recherche en Imagerie et Technologies pour la Santé RITS 2011conference proceeding 2011-06-29
Induction magnetometer using a low noise ASIC from sensor to ADC: design, performances and limitation
9th European Conference on Magnetic Sensors and Actuators Conference EMSA 2012conference proceeding 2012-09-20
Design and Characterization of a High Dynamic Range and Ultra Low Power 16-Channel ASIC for an Innovative 3D Imaging Space Plasma Analyzer
A very low power 16-channel ASIC has been designed and fabricated in a standard 0.35 $mu{hbox{m}}$ CMOS technology. It is to be used as the front-end electronics of the micro-channel plates (MCPs) based detector of a 3D space plasma analyzer. Each channel includes a charge sensitive amplifier (CSA) and a discriminator. With a CSA conversion gain of 0.5 mV/fC, the ASIC is able to detect charges emitted by the MCPs over a wide dynamic range of 10 fC to 3.5 pC. The CSA pulse-pair-resolution (PPR) is 170 ns, and the maximum counting rate frequency is 7.5 MHz for input charges limited to 100 fC and 4.6 MHz for full scale inputs. The CSA input devices are optimized for a detector capacitance varying in the range of 2-12 pF. The measured input equivalent noise charge $({hbox{ENC}}_{rm in})$ is 1.3 fC $+$ 0.1 fC/pF rms. These features have been obtained with an unprecedented low power consumption of only 0.64 mW per channel. Experimental tests under the extended temperature range of $-{hbox{40}}~^{circ}{hbox{C}}$ to 85$~^{circ}{hbox{C}}$ have shown no significant performance variations.
IEEE Transactions on Nuclear Science ISSN:0018-9499article in peer-reviewed journal 2012-09-14
A high dynamic range and low power 16-channel CMOS circuit for particle detection in space plasmas
A low power 16-channel ASIC has been designed in the standard 0.35μm CMOS technology. It includes a Charge-Sensitive-Amplifier (CSA) and a discriminator from noise. It is designed using hard-rad layout rules and can be used as the front-end electronics of a 3D imaging space plasma analyser that includes charged particles multipliers (Micro Channel Plates). With a total power consumption limited to 600μW per channel, the detection chain achieves a gain of 1mV/fC over a wide dynamic range of input charges varying from 4fC to 4pC. The CSA Pulse-Pair-Resolution (PPR) is 250ns providing the ability to reach a minimum particle count rate of 4MHz periodic per channel. By adjusting the threshold of discrimination from noise to the limited dynamic range of standard MCP, it is suggested that particle count rates as high as 10MHz periodic can be achieved with this low power ASIC while classical hybrid space qualified components with a similar count rate capability have a power consumption of 25mW per channel.
IEEE International Instrumentation and Measurement Technology Conference Conference I2MTC 2012conference proceeding 2012-07-25
Semiconducting YBaCuO films grown on silicon substrates: IR room temperature sensing and fast pyroelectric response
YBa2Cu3O6+x (YBCO) oxides, well known as superconductors for x > 0. 5, are semiconductors (SC) for lower oxygen content. SC films DC sputtered at 150 °C in amorphous form (a-YBCO) exhibited a temperature coefficient of resistance competitive with other bolometric sensing materials. Such deposition conditions are highly beneficial to integrate a radiation detector on a silicon chip bearing already processed readout electronics. IR detector structures have been processed: simple planar or more advanced metal/a-YBCO/metal trilayers. IR response was investigated at 850 nm as a function of the modulation frequency. The planar structure exhibited a regular bolometric response below 100 Hz, then a pyroelectric high-pass response up to 100 kHz. The trilayer device only exhibited the pyroelectric behavior up to 100 kHz . In the pyroelectric regime, detectivity values peaked above 2×108 cm Hz½/W with time constants in the μs range, under both DC biased and unbiased conditions.
IOP Conference Series: Materials Science and Engineeringarticle in peer-reviewed journal 2012
A Very Low 1/f Noise and Radiation-Hardened CMOS Preamplifier for High Sensitivity Search Coil Magnetometers
A 4 nV/pHz at 10 Hz preamplifier with a 12 mW power consumption, in CMOS 0.35 ìm technology, has been developed in order to go one step further in the integration of the preamplifier of a search coil magnetometer. The present ASIC preamplifier, combined with a 10 cm length, 12 mm diameter and 15000 turns search coil sensor demonstrates a Noise Equivalent Magnetic Induction (NEMI) as low as 2 pT/p(Hz) at 10 Hz and 14 fT/p(Hz) at 4 kHz. The measured current noise is only 46 fA/pHz. AC magnetometers (100 mHz up to a few kHz) based on search coil sensors are used for space plasmas physics investigations due to their excellent robustness and very high sensitivity. The present ASIC preamplifier offers a way to save weight, volume and power considerably. The present work will focus on the design of the ASIC, driven by the following criteria: low thermal and 1/f noise, radiation hardness for space purpose and power consumption.
IEEE Sensors Journal ISSN:1530-437Xarticle in peer-reviewed journal 2013-01-25
Fixed-gain CMOS differential amplifiers with no external feedback for a wide temperature
Cryogenics, Vol. 49, No. 11, pp. 615-619 2009-11
Cryogenic SiGe ASICs for readout and multiplexing of superconducting detector array
Cryogenics, Vol. 49, No. 11, pp. 681-685 2009-11
Integrated Circuit Operating at 4.2 K for Time Domain SQUID Multiplexing of Superconducting Bolometer Array
Cryogenics, pp. on line 2009-08
Development of Superconducting NbSi TES Array and Associated Readout With SQUIDs and Integrated Circuit Operating at 2 K
IEEE Transactions on Applied Superconductivity, Vol. 19, No. 3, pp. 501-504 2009-07
Very Low Noise Multiplexing with SQUID and SiGe HBTs For Readout of Large Superconducting Bolometer Arrays
Journal of Low Temperature Physics, Vol. 151, No. 3-4, pp. 1028-1033 2008-02