The ASDBLR board is an integral part of the LHCb Outer Tracker Front End Elctronics. The essential function of the board is to host two ASDBLR preamplifier-discriminator chips, which receive the small hit charges from the Outer Tracker anode wires and send their digital outputs to a Time-to-Digital Converter.
Description of the ASDBLR Board: [ ps,pdf ]
Noise Studies: LHCb Note 2004-117
ASDBLR V4 Layout
Other useful links:
UPenn ATALS ASDblr page (DMILL results)
ATLAS ASDblr page
UPenn ATLAS ASDblr page (general)