Szczegóły publikacji
Opis bibliograficzny
SPECTRUM1k - 75 $\mu$m pixels pitch IC with in-pixel histogramming for X-ray color imaging / P. KMON, R. KŁECZEK, R. SZCZYGIEŁ, G. WĘGRZYN // IEEE Transactions on Circuits and Systems . II, Express Briefs ; ISSN 1549-7747. — 2025 — vol. 72 no. 8, s. 1003–1007. — Bibliogr. s. 1007, Abstr. — Publikacja dostępna online od: 2025-06-23
Autorzy (4)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 163855 |
|---|---|
| Data dodania do BaDAP | 2025-11-19 |
| Tekst źródłowy | URL |
| DOI | 10.1109/TCSII.2025.3579856 |
| Rok publikacji | 2025 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | IEEE Transactions on Circuits and Systems, II, Express Briefs |
Abstract
A new single photon-counting IC prototype called SPECTRUM1k with pixel matrix 40× 24 and pixel pitch 75μm is developed by the Microelectronics Group of the AGH University of Krakow as a solution for X-ray color imaging. The chip, produced in CMOS 40nm technology, is made up of 960 individually configured pixels, each composed of an amplifier, an analog-to-digital converter, and 64× 12-bit memory cells that allow one to perform in-pixel energy histogramming. Thanks to the proposed architecture working with the 200 MHz chip clock and 1 Gcps/mm2 multi energy photon intensities up-to about 23 ms exposition time is feasible (365μs exposition time whenever monoenergetic photons are used only). In-pixel offsets ({=} 3.5 %) and gain ({=} 5.8 %) spread, the amplifier performance (Equivalent Noise Charge {=} 95e-RMS) and the ADC resolution (Effective Number of Bits {=} 5.4b) allow to convert the incoming photons' energy with FWHM {=} 3.7ke @134.2 keV upon 81μ W or 48μ W per pixel power consumption. In this publication, we present a description of the ASIC's architecture as well as characterization results. The threshold dispersions, gain spread as well as noise and energy measurement performance of the SPECTRUM1k are presented.
