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TWEPP-07 Topical Workshop on Electronics for Particle Physics Search, Prague : Tchèque, République (2007)
HARDROC, HAdronic Rpc Detector ReadOut Chip
N. Seguin-Moreau1, M. Bouchel1, C. de La Taille1, G. Martin-Chassard1, R. Gaglione2, I. Laktineh2, H. Mathez2, J.-C. Brient3, C. Jauffret3

HARDROC is a complete readout chip in SiGe 0.35µm of the RPCs or GEMs foreseen for a Digital HAdronic CALorimeter (DHCAL) at the ILC. The ASIC integrates 64 channels of • fast low impedance preamplifier with 6bits variable gain (tunable between 0 and 4) • variable shaper (50-150ns) and Track and Hold to provide a multiplexed analog charge output up to 10pC. • variable gain fast shaper (15ns) followed by two low offset discriminators to autotrigg down to10 fC. The thresholds are loaded by two internal 10 bit- DACs. • A 128 deep digital memory to store the 2*64 discriminator outputs and bunch crossing identification coded over 24 bits counter. The design and measured performance of the chip will be presented.
1 :  LAL - Laboratoire de l'Accélérateur Linéaire
2 :  IPNL - Institut de Physique Nucléaire de Lyon
3 :  LLR - Laboratoire Leprince-Ringuet
Sciences de l'ingénieur/Electronique