IDeF-X V1.0: A new 16-channel low-noise analog front-end for Cd(Zn)Te detectors
✍ Scribed by O. Gevin; F. Lugiez; O. Limousin; P. Baron; C. Blondel; X. Coppolani; B.P.F. Dirks; E. Delagnes
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 256 KB
- Volume
- 567
- Category
- Article
- ISSN
- 0168-9002
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✦ Synopsis
Joint progress in Cd(Zn)Te detectors, microelectronics and interconnection technologies open the way for a new generation of instruments for physics and astrophysics applications in the energy range from 1 to 1000 keV. Even working between À20 and 20 1C, these instruments will offer high spatial resolution (pixel size ranging from 300 Â 300 mm 2 to few mm 2 ), high spectral response and high detection efficiency. To reach these goals, reliable, highly integrated, low noise and low power consumption electronics is mandatory. Our group is currently developing a new full-custom detector front-end ASIC named IDeF-X, for modular spectro-imaging system based on the use of Cd(Zn)Te detectors. We present the most recent version of IDeF-X which is a 16 channels analog readout chip for hard Xray spectroscopy. It has been processed with the standard AMS 0.35 mm CMOS technology. Each channel consists of a charge sensitive preamplifier, a pole zero cancellation stage, a variable peaking time filter and an output buffer. IDeF-X is designed to be DC coupled to detectors having a low dark current at room temperature and is optimized for input capacitance ranging from 2 to 5pF.