Design of pixel-level ADCs for energy-sensitive hybrid pixel detectors


San Segundo Bello, David and Nauta, Bram and Visschers, Jan (2000) Design of pixel-level ADCs for energy-sensitive hybrid pixel detectors. In: ProRISC 2000, 11th Annual Workshop on Circuits, Systems and Signal Processing, 30 Nov - 1 Dec 2000, Veldhoven, the Netherlands (pp. pp. 489-493).

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Abstract:Single-photon counting hybrid pixel detectors have shown
to be a valid alternative to other types of X-ray imaging
devices due to their high sensitivity, low noise, linear behavior
and wide dynamic range. One important advantage of these
devices is the fact that detector and readout electronics are
manufactured separately. This allows the use of industrial
state-of-the-art CMOS processes to make the readout
electronics, combined with a free choice of detector material
(high resistivity Silicon, GaAs or other). By measuring not
only the number of X-ray photons but also their energies (or
wavelengths), the information content of the image increases,
given the same X-ray dose. We have studied several
possibilities of adding energy sensitivity to the single photon
counting capability of hybrid pixel detectors, by means of
pixel-level analog-to-digital converters. We show the results of
simulating different kinds of analog-to-digital converters in
terms of power, area and speed.
Item Type:Conference or Workshop Item
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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