Münster 2017 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 95: Pixeldetektoren 5
T 95.8: Vortrag
Mittwoch, 29. März 2017, 18:35–18:50, S 2
Characterization of a new 65 nm Shunt-LDO Regulator — Matthias Hamer1, •Florian Hinterkeuser1, Fabian Hügging1, Michael Karagounis2, Norbert Wermes1 und Klaus Desch1 — 1Universität Bonn — 2Fachhochschule Dortmund
The high luminosity upgrade for the Large Hadron Collider at CERN requires a complete overhaul of the ATLAS detector. The current tracking detector will be replaced by an all-silicon tracking detector, the ITk. It will occupy the same volume as the current ATLAS tracker and will cover a significantly larger phase space.
The new ITk pixel detector will consist of multichip modules produced in 65 nm CMOS technology. In order to optimize the performance of the new tracker, the material budget has to be minimized. A parallel powering scheme, as used in the current pixel detector, is not feasible due to the increased number of modules. In order to reduce the material budget as well as voltage drops on the supply cables, a serial powering scheme has been proposed.
In this scheme, modules are powered in series and supplied by a constant current source, reducing the voltage drop on the cables as well as the material used. On module level, several front-end chips are powered in parallel. The supply voltages for the digital and analog parts of these readout chips are generated by on-chip Shunt-LDO regulators.
This talk will present the properties of a first regulator prototype produced in 65 nm CMOS technology to be used in the future readout chip for the ITk pixel detector.