Implementation of the ASDBLR straw tube readout ASIC in DMILL technology

Citation
N. Dressnandt et al., Implementation of the ASDBLR straw tube readout ASIC in DMILL technology, IEEE NUCL S, 48(4), 2001, pp. 1239-1243
Citations number
5
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Nuclear Emgineering
Journal title
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
ISSN journal
0018-9499 → ACNP
Volume
48
Issue
4
Year of publication
2001
Part
1
Pages
1239 - 1243
Database
ISI
SICI code
0018-9499(200108)48:4<1239:IOTAST>2.0.ZU;2-N
Abstract
The ASDBLR application-specific integrated circuit (ASIC) provides eight ch annels of low-noise low-power high-rate on-detector readout suitable for th e ATLAS transition radiation tracker (TRT) at the large hadron collider. Th e TRT's unprecedented wire chamber readout requirements of a maximum hit ra te per wire of 20 MHz and double-pulse resolution of similar to 25 ns with position resolution of better than 150 mum in a high radiation environment have been addressed in the design of the ASDBLR. A carefully tuned ion tail cancellation stage followed by an output sensing baseline restorer impleme nted in differential structures provides robust signal-processing combinati on compatible with the realities of ASIC design. Two comparators track the output of the signal-processing stage to provide tracking information from charged particles and evidence of higher energy transition radiation photon s; their outputs are summed as current steps to form a differential ternary output. The ten-year total dose requirement for neutrons of 10(14) n/cm(2) and 1.5 MRad of ionizing radiation led to the implementation of this desig n in the radiation hardened DMILL process.