In this paper an allanalog pixel architecture for the readout of Xray pixel detectors is proposed, comprising a selftriggered reset charge amplifier, three autocalibrated comparators, an energy window identification logic and three analog counters with adjustable dynamic range. A prototype has been built with a standard CMOS 0.35 µm technology: the pixel pitch is 109 µm, dissipates 15 µW at 3.3V supply, has a noise equivalent charge of 82erms at 200fF and allows on each of the three channels a dynamic range that exceeds 12 bit.
A Multi-Spectral Analog Photon Counting Readout Circuit for X-Ray Hybrid Pixel Detectors
Perenzoni, Matteo;Stoppa, David;Malfatti, Mattia;Simoni, Andrea
2006-01-01
Abstract
In this paper an allanalog pixel architecture for the readout of Xray pixel detectors is proposed, comprising a selftriggered reset charge amplifier, three autocalibrated comparators, an energy window identification logic and three analog counters with adjustable dynamic range. A prototype has been built with a standard CMOS 0.35 µm technology: the pixel pitch is 109 µm, dissipates 15 µW at 3.3V supply, has a noise equivalent charge of 82erms at 200fF and allows on each of the three channels a dynamic range that exceeds 12 bit.File in questo prodotto:
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