Title :
A Multi-Spectral Analog Photon Counting Readout Circuit for X-Ray Hybrid Pixel Detectors
Author :
Perenzoni, Matteo ; Stoppa, David ; Malfatti, Mattia ; Simoni, Andrea
Author_Institution :
Center for Sci. & Technol. Res., Povo
Abstract :
In this paper an all-analog pixel architecture for the readout of X-ray pixel detectors is proposed, comprising a self-triggered 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 mum technology: the pixel pitch is 109 mum, dissipates 15 muW at 3.3 V supply, has a noise equivalent charge of 82erms - at 200 fF and allows on each of the three channels a dynamic-range that exceeds 12-bit
Keywords :
X-ray detection; comparators (circuits); photon counting; pulse amplifiers; readout electronics; 15 muW; 200 fF; 3.3 V; X-ray hybrid pixel detectors; analog counters; analog readout circuit; autocalibrated comparators; energy window identification logic; multispectral readout circuit; photon counting readout circuit; self-triggered reset charge amplifier; standard CMOS technology; Biomedical imaging; CMOS technology; Counting circuits; Crystallography; Dynamic range; Pulse amplifiers; Semiconductor device noise; X-ray detection; X-ray detectors; X-ray imaging; analog counter; charge amplifier; energy window; photon counting; pixel detector; x-ray;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Conference_Location :
Sorrento
Print_ISBN :
0-7803-9359-7
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2006.328396
