Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 466, Issue 2, Pages 366-375Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0168-9002(01)00590-3
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The ALICEILHCB chip is a mixed-mode integrated circuit designed to read out silicon pixel detectors for two different applications: particle tracking in the ALICE Silicon Pixel Detector and particle identification in the LHCb Ring Imaging Cherenkov detector. To satisfy the different needs for these two experiments, the chip can be operated in two different modes. In tracking mode all the 50 mum x 425 mum pixel cells in the 256 x 32 array are read out individually, whilst in particle identification mode they are combined in groups of 8 to form a 32 x 32 array of 400 mum x 425 mum cells. Radiation tolerance was enhanced through special circuit layout. Sensitivity to coupling of digital signals into the analog front end was minimized. System issues such as testability and uniformity further constrained the design. The circuit is currently being manufactured in a commercial 0.25 mum CMOS technology. (C) 2001 Elsevier Science B.V. All rights reserved.
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