TY - JOUR
T1 - Experimental characterization of a 10 μw 55 μm-pitch FPN-compensated CMOS digital pixel sensor for X-ray imagers
AU - Figueras, Roger
AU - Martínez, Ricardo
AU - Terés, Lluís
AU - Serra-Graells, Francisco
PY - 2014/10/11
Y1 - 2014/10/11
N2 - This paper presents experimental results obtained from both electrical and radiation tests of a new room-temperature digital pixel sensor (DPS) circuit specifically optimized for digital direct X-ray imaging. The 10 μW 55 μm-pitch CMOS active pixel circuit under test includes self-bias capability, built-in test, selectable e-/h+ collection, 10-bit charge-integration A/D conversion, individual gain tuning for fixed pattern noise (FPN) cancellation, and digital-only I/O interface, which make it suitable for 2D modular chip assemblies in large and seamless sensing areas. Experimental results for this DPS architecture in 0.18 μm 1P6M CMOS technology are reported, returning good performance in terms of linearity, 2kerms- of ENC, inter-pixel crosstalk below 0.5 LSB, 50 Mbps of I/O speed, and good radiation response for its use in digital X-ray imaging. © 2014 Elsevier B.V.
AB - This paper presents experimental results obtained from both electrical and radiation tests of a new room-temperature digital pixel sensor (DPS) circuit specifically optimized for digital direct X-ray imaging. The 10 μW 55 μm-pitch CMOS active pixel circuit under test includes self-bias capability, built-in test, selectable e-/h+ collection, 10-bit charge-integration A/D conversion, individual gain tuning for fixed pattern noise (FPN) cancellation, and digital-only I/O interface, which make it suitable for 2D modular chip assemblies in large and seamless sensing areas. Experimental results for this DPS architecture in 0.18 μm 1P6M CMOS technology are reported, returning good performance in terms of linearity, 2kerms- of ENC, inter-pixel crosstalk below 0.5 LSB, 50 Mbps of I/O speed, and good radiation response for its use in digital X-ray imaging. © 2014 Elsevier B.V.
KW - CMOS
KW - Digital pixel sensor (DPS)
KW - FPN
KW - Imaging
KW - Low-power
KW - X-ray
U2 - 10.1016/j.nima.2014.05.085
DO - 10.1016/j.nima.2014.05.085
M3 - Article
SN - 0168-9002
VL - 761
SP - 19
EP - 27
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -