CDP1—A Data Concentrator Prototype for the Deep Underground Neutrino Experiment

The design, power analysis, and tests of a first COLDATA Prototype (CDP1) design in a 65-nm process for the long baseline neutrino facility (LBNF) and the deep underground neutrino experiment (DUNE) are presented. CDP1 is a prototype application-specified integrated circuit (ASIC), for the COLDATA chip, a data concentrator operating in liquid argon. CDP1 is a test vehicle to qualify most of the analog and digital blocks such as low-voltage differential signaling (LVDS) transmitters and receivers, a 1.28-Gb/s serializer, a phase locked loop, I²C for slow control, fast command receiver, and calibration logic at cryogenic temperature. The test measurements of these blocks are carried out at room temperature (300 K) and at cryogenic temperature (77 K). The test measurements presented in this article are in good agreement with the simulation results.