کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8168969 | 1526295 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A 2D imager for X-ray FELs with a 65Â nm CMOS readout based on per-pixel signal compression and 10Â bit A/D conversion
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A readout channel for applications to X-ray diffraction imaging at free electron lasers has been developed in a 65Â nm CMOS technology. The analog front-end circuit can achieve an input dynamic range of 100Â dB by leveraging a novel signal compression technique based on the non-linear features of MOS capacitors. Trapezoidal shaping is accomplished through a transconductor and a switched capacitor circuit, performing gated integration and correlated double sampling. A small area, low power 10Â bit successive approximation register (SAR) ADC, operated in a time-interleaved fashion, is used for numerical conversion of the amplitude measurement. Operation at 5Â MHz of the analog channel including the shaper was demonstrated. Also, the channel was found to be compliant with single 1Â keV photon resolution at 1.25Â MHz. The ADC provides a signal-to-noise ratio (SNR) of 56Â dB, corresponding to an equivalent number of bits (ENOB) of 9Â bits, and a differential non linearity DNL<1 LSB at a sampling rate slightly larger than 1.8Â MHz.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 831, 21 September 2016, Pages 301-308
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 831, 21 September 2016, Pages 301-308
نویسندگان
L. Ratti, D. Comotti, L. Fabris, M. Grassi, L. Lodola, P. Malcovati, M. Manghisoni, V. Re, G. Traversi, C. Vacchi, G. Rizzo, G. Batignani, S. Bettarini, G. Casarosa, F. Forti, M. Giorgi, F. Morsani, A. Paladino, M.A. Benkechkache,