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Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray

DOI: 10.1117/12.2056712

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The SIRIUS Mixed analog-digital ASIC developed for the LOFT LAD and WFM instruments

Journal article published in 2014 by A. Cros, Delphine Rambaud, Emmanuel Moutaye, Laurent Ravera, D. Barret, R. Clédassou, P.-H. Cais, J.-Y. Seyler, P. Bodin, A. Bonzo, M. Feroci ORCID, C. Labanti ORCID, Y. Evangelista ORCID, All And, Y. Favre
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This paper is available in a repository.

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Abstract

We report on the development and characterization of the low-noise, low power, mixed analog-digital SIRIUS ASICs for both the LAD and WFM X-ray instruments of LOFT. The ASICs we developed are reading out large area silicon drift detectors (SDD). Stringent requirements in terms of noise (ENC of 17 e- to achieve an energy resolution on the LAD of 200 eV FWHM at 6 keV) and power consumption (650 {μ}W per channel) were basis for the ASICs design. These SIRIUS ASICs are developed to match SDD detectors characteristics: 16 channels ASICs adapted for the LAD (970 microns pitch) and 64 channels for the WFM (145 microns pitch) will be fabricated. The ASICs were developed with the 180nm mixed technology of TSMC. ; Comment: Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 914463