The performance of a Pre-Processor Multi-Chip Module for the ATLAS Level-1 Trigger
نویسندگان
چکیده
We have built and tested a mixed signal Multi-Chip Module (MCM) to be used in the Pre-Processor of the ATLAS Level-1 Calorimeter Trigger. The MCM performs high speed digital signal processing on four analogue trigger input signals. Results are transmitted serially at a serial data rate of 800 MBd. Nine chips of different technologies are mounted on a four layer copper substrate. Analogue-to-digital converters and serialiser chips are the major consumers of electrical power on the MCM, which amounts to 7.5 Watts for all dies. Special cut-out areas are used to dissipate heat directly to the copper substrate. In this paper we report on design criteria, the MCM technology chosen for substrate and die mounting, experiences with the MCM operation and measurement results.
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