| Autor: |
Fant, A. Gasiorek, P. Turchetta, R. Avset, B. Bergamaschi, A. Cavouras, D. Evangelou, I. French, M.J. Galbiati, A. Georgiou, H. Hall, G. Iles, G. Jones, J. Longo, R. Manthos, N. Metaxas, M.G. Noy, M. Ostby, J.M. Psomadellis, F. Royle, G.J. Schulerud, H. Speller, R.D. van der Stelt, P.F. Theodoridis, S. Triantis, F. Venanzi, C. |
| Jazyk: |
angličtina |
| Rok vydání: |
2007 |
| Popis: |
We have developed a 1.5 D CMOS active pixel sensor to be used in conjunction with a scintillator for X-ray imaging. Within the Intelligent Imaging Sensors (I-ImaS) project, multiple sensors will be aligned to form a line-scanning system and its performance evaluated with respect to existing sensors in other digital radiography systems. Each sensor contains a 512×32 array of pixels and the electronics to convert the collected amount of charge to a digital output value. These include programmable gain amplifiers (PGAs) and analogue-to-digital converters (ADCs). The gain of the PGA can be switched between one or two, to increase the sensitivity for smaller collected charge; the ADC is a 14-bit successive approximation with a sampling rate of 1.25 MHz. The ASIC includes a programmable column fixed pattern noise mitigation circuit and a digitally controllable pixel reset mode block. Here we will describe the sensor design and the expected performance. © 2006 Elsevier B.V. All rights reserved. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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