IDeF-X V1.1: Performances of a New CMOS 16 Channels Analogue Readout ASIC for Cd(Zn) Te Detectors

Lugiez,; Gevin,; Baron,; Delagnes,; Limousin,

doi:10.1109/nssmic.2006.355981

Cited by 20 publications

(5 citation statements)

References 4 publications

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“…However, it supports a leakage current up to 10 nA. Compared to our previous designs [8,11], we reduced the feedback capacitance from 200 fF down to 50 fF. In addition, we increased the input dynamic range up to 40 fC instead of 10 fC.…”

Section: Charge Sensitive Amplifiermentioning

confidence: 97%

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IDeF-X HD: A CMOS ASIC for the Readout of Cd(Zn)Te Detectors for Space-Borne Applications

Gevin

Limousin

Lugiez

et al. 2021

J. Astron. Instrum.

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IDeF-X HD is a 32-channel analog front-end with self-triggering capability optimized for the readout of [Formula: see text] pixels CdTe or CdZnTe pixelated detectors to build a low power micro-gamma camera. IDeF-X HD has been designed in the standard AMS CMOS 0.35[Formula: see text][Formula: see text]m process technology. Its power consumption is 800[Formula: see text][Formula: see text]W per channel. The energy range of the ASIC can be extended to 1.1[Formula: see text]MeV thanks to the in-channel adjustable gain stage. When no detector is connected to the chip and without input current, a 33 electrons rms ENC level is achieved after shaping with 10.7[Formula: see text][Formula: see text]s peaking time. Spectroscopy measurements have been performed with CdTe Schottky detectors. We measured an energy resolution of 4.2[Formula: see text]keV FWHM at 667[Formula: see text]keV ([Formula: see text]Cs) on a single-pixel configuration. Meanwhile, we also measured 562[Formula: see text]eV and 666[Formula: see text]eV FWHM at 14[Formula: see text]keV and 60[Formula: see text]keV, respectively ([Formula: see text]Am) with a 256 small pixel array and a low detection threshold of 1.2[Formula: see text]keV. Since IDeF-X HD is intended for space-borne applications in astrophysics, we evaluated its radiation tolerance and its sensitivity to single event effects. We demonstrated that the ASIC remained fully functional without significant degradation of its performances after 200 krad and that no single event latch-up was detected putting the linear energy transfer threshold above 110[Formula: see text]MeV/(mg/cm2). Good noise performance and radiation tolerance make the chip well suited for X-rays energy discrimination and high energy resolution. The chip is space qualified and flies on board of the solar orbiter ESA mission launched in 2020.

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Section: Charge Sensitive Amplifiermentioning

confidence: 97%

“…For few years, our group has been developing a family of ASICs for space applications, named IDeF-X standing for Imaging Detector Front-end [8]- [11]. IDeF-X HD is the latest space qualified version of the IDeF-X family.…”

Section: Introductionmentioning

confidence: 99%

IDeF-X HD: A CMOS ASIC for the Readout of Cd(Zn)Te Detectors for Space-Borne Applications

Gevin

Limousin

Lugiez

et al. 2021

J. Astron. Instrum.

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“…Power dissipation is 2.8 mW / channel. Moreover, the circuit is radiation hard up to 1 MRad, and so, it is compatible with space applications [11].…”

Section: Cd(zn)te Detectorsmentioning

confidence: 99%

Caliste 64: detection unit of a spectro imager array for a hard x-ray space telescope

Limousin¹,

Gevin²,

Pinsard³

et al. 2017

International Conference on Space Optics — ICSO 2008

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“…Power dissipation is 2.8 mW / channel. Moreover, the circuit is radiation hard up to 1 MRad, and so, it is compatible with space applications [11]. IDeF-X 1.1 is a 16-channel readout chip.…”

Section: Front-end Electronicsmentioning

confidence: 99%

Caliste 64: detection unit of a spectro imager array for a hard x-ray space telescope

et al. 2008

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In the frame of the hard X-ray Simbol-X observatory, a joint CNES-ASI space mission to be flown in 2014, a prototype of miniature Cd(Zn)Te camera equipped with 64 pixels has been designed. The device, called Caliste 64, is a spectroimager with high resolution event time-tagging capability. Caliste 64 integrates a Cd(Zn)Te semiconductor detector with segmented electrode and its front-end electronics made of 64 independent analog readout channels. This 1 × 1 × 2 cm 3 camera, able to detect photons in the range from 2 keV up to 250 keV, is an elementary detection unit juxtaposable on its four sides. Consequently, large detector array can be made assembling a mosaic of Caliste 64 units. Electronics readout module is achieved by stacking four IDeF-X V1.1 ASICs, perpendicular to the detection plane. We achieved good noise performances, with a mean Equivalent Noise Charge of ~65 electrons rms over the 64 channels. Time resolution is better than 70 ns rms for energy deposits greater than 50 keV, taking into account electronic noise and technological dispersal, which enables to reject background by anticoincidence with very low probability of error. For the first prototypes, we chose CdTe detectors equipped with Al-Ti-Au Schottky barrier contacts because of their very low dark current and excellent spectroscopic performances. So far, three Caliste 64 cameras have been realized and tested. When the crystal is cooled down to -10°C, the sum spectrum built with the 64 pixels of a Caliste 64 sample results in a spectral resolution of 664 eV FWHM at 13.94 keV and 841 eV FWHM at 59.54 keV. SCIENTIFIC AND TECHNOLOGICAL CONTEXT Simbol-X missionThe Simbol-X mission is a hard X-ray space telescope. It is currently undergoing a phase B with the French and the Italian space agencies. This telescope will fill the gap between X-ray telescopes with grazing mirrors, efficient until ~10 keV (XMM-Newton, Chandra missions) and hard X-ray and gamma-ray instruments using indirect imaging technique with coded masks to detect higher energies (INTEGRAL, SWIFT missions). Simbol-X will be a 20 meter focal length observatory, achieved by two satellites flying in formation. One carries the grazing incidence mirror to focus X-rays until 80 keV. The other satellite carries the detector payload. This focusing technique improves sensitivity and angular resolution by two orders of magnitude compared to the current instruments above 10 keV. As a consequence, a wide range of sources can be studied in detail, such as galactic and extra-galactic compact sources, supernovae remnants, cluster of galaxies, or young stellar objects. The core scientific objectives of Simbol-X are black holes physics and particle acceleration mechanisms [1,2].The detection set consists of three detector units [3]. The Low Energy Detector is a silicon drift detector with DEPFET readout, also called "Macro Pixel Detector" [4]. It covers the energy range from 0.5 to 20 keV. The High Energy Detector (HED) installed below the first detector is efficient from 8 to 100 keV. The third unit...

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IDeF-X V1.1: Performances of a New CMOS 16 Channels Analogue Readout ASIC for Cd(Zn) Te Detectors

Cited by 20 publications

References 4 publications

IDeF-X HD: A CMOS ASIC for the Readout of Cd(Zn)Te Detectors for Space-Borne Applications

IDeF-X HD: A CMOS ASIC for the Readout of Cd(Zn)Te Detectors for Space-Borne Applications

Caliste 64: detection unit of a spectro imager array for a hard x-ray space telescope

Caliste 64: detection unit of a spectro imager array for a hard x-ray space telescope

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