A MCM-D-type module for the ATLAS pixel detector

For the ATLAS experiment at the planned Large Hadron Collider LHC at CERN h ybrid pixel detectors are being built as innermost layers of the inner trac king detector system. Modules are the basic building blocks of the ATLAS pi xel detector. A module consists of a sensor tile with an active area of 16. 4 mm x 60.4 mm, 16 read out IC's, each serving 24 x 160 pixel unit cells, a module controller chip, an optical transceiver and the local signal interc onnection and power distribution busses. The dies are attached by flip-chip assembly to the sensor diodes and the local busses. In the following a module based on MCM-D technology will be discussed and p rototype results will be presented.