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

fYear

2006

fDate

24-27 April 2006

Firstpage

2003

Lastpage

2006

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 82e_rms ^- 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE

Conference_Location

Sorrento

ISSN

1091-5281

Print_ISBN

0-7803-9359-7

Electronic_ISBN

1091-5281

Type

conf

DOI

10.1109/IMTC.2006.328396

Filename

4124706