MAROC, a generic photomultiplier readout chip

作者：Blin S^*; Barrillon P; de La Taille C

来源：Journal of Instrumentation, 2010, 5: C12007.

DOI：10.1088/1748-0221/5/12/C12007

• VLSI circuits
• Analogue electronic circuits
• Front-end electronics for detector readout

The MAROC ASICs family is dedicated to the readout of 64-channel Multi Anode PMT and similar detectors. Its main roles are to correct the gain spread of MAPMT channels thanks to an individual variable gain preamplifier and to discriminate the input signals (from 50fC i.e 1/3 photo-electron) in order to produce 64 trigger outputs. A multiplexed analog charge output is also available with a dynamic range around 10 pe (similar to 1.6 pC) and a 12 bit Wilkinson ADC is embedded. Three versions of this chip have been submitted. MAROC 2 is the production version for the ATLAS luminometer and MAROC3 is a version with lower dissipation and significant improvements concerning the charge (30 pe: similar to 5 pC) and trigger (discrimination from 10fC). This third version showed very good characteristics that are presented here.

• 出版日期2010-12