News from the DSM User Group Meeting Imperial College, London, 17 June 2002

1. News from theDSM User Group MeetingImperial College, London,17 June 2002 Preshower meeting 20 June 2002 KLOUKINAS Kostas EP/CME-PS

2. Technical Issues (1) • Presentation of the latest Design Kit release by M. French • Design Kit ver. 1.03 runs on CADENCE ver. 4.4.3 • New functions & bug fixes • EUROPRACTICE support • New I/O pads by G. Cervelli • Slew Rate controlled output pads • New ESD protection scheme • Bandgap cell degradation with Irradiation by G. Cervelli • Change in reference voltage of ~10% after 27MRAD • Leakage current of the bandgap diode. • Fixes are on the way (reduce the diode periphery, increase the reference current) KLOUKINAS Kostas EP/CME-PS

3. Technical Issues (2) • Optional fabrication layers • High value PC resistors. Not supported. • Metal-to-Metal capacitors (MIMCAP) Standard option. • Fuses (factory laser blown). Supported at an extra charge. • New general purpose blocks • Currently available: Bandgap voltage reference & SRAM • DACs, ADCs, I2C interfaces, OPAMPs, … • Update website. • Status of the SRAM macrocell by K. Kloukinas • Measurements from test chips • SRAM macrocell popularity • Design support KLOUKINAS Kostas EP/CME-PS

4. CERN SRAM popularity ! • ATLAS SCAC chip • Memory configuration: 128 x 18bit • Detector: ATLAS tracker • Lab: NEVIS Labs • Designer: Stephan Boettcher • Status: Tested O.K. • ATLAS DTMROC chip • Memory configuration: 128 x 153 bits • Detector: ATLAS TRT • Lab: CERN • Designer: Robert Szczygiel • Status: Tested O.K. • CMS K chip • Memory configuration: 2K x 18 bits • Detector: CMS Preshower • Lab: CERN • Designer: Kostas Kloukinas • Status: work in progress • ATLAS MCC chip • Memory configuration: 128 x 27bit • Detector: ATLAS PIXEL • Lab: INFN Genova • Designer: Roberto Beccherle • Status: Tested O.K. • ALICE AMBRA chip • Memory configuration: 16K X 9 bits • Detector: ALICE Silicon Drift Det. • Lab: INFN Torino • Designer: Gianni Mazza • Status: Submitted • ALICE CARLOS chip • Memory configuration: 256 X 9 bits • Detector: ALICE Silicon Drift Det. • Lab: INFN Bologna • Designer: Alessandro Gabrielli • Status: work in progress KLOUKINAS Kostas EP/CME-PS

5. Technical Issues (3) • Yield experience by A. Marchioro • Some projects report variable yield (20%-80%) per lot. • The problem affects big analog chips. • Problem is under investigation in collaboration with the foundry. • Design guidelines: be conservative, do not violate foundry design rules & recommendations, be very cautious for the “antenna effect”, add testability features. • Update of submission procedures by F. Faccio • Info on the http://cern.ch/deepsub • Common Packaging Problems • Are there common needs for packaging ? • Send “packaging preferences” to A. Marchioro. • Is it possible to coordinate the packaging work? • Documentation by F. Faccio • Prepare a collection of “design flows”, “recipes”, “scripts” and “notes” that various designers have made. Make it available to all DSM users. KLOUKINAS Kostas EP/CME-PS

6. Organizational issues • Plans for MPW in 2002-2003 • MPW 8 scheduled for Aug. might be postponed for Sept. It will be a “costly” run. • MPW 9 scheduled for Oct. will be postponed for Dec. Big demand for participation ! • Next year there might not be many “general purpose” MPWs. • Extension of contract with foundry by A. Marchioro • Faster MPW delivery from the foundry • New exportation license will allow the European fabrication line to export goods to Europe! • Situation with export licenses • There is a clear distinction between “standard” and “Radiation Tolerant” designs. • All RadTol chips shipped to institutes have to return at CERN by 2005. • Utilization of the technology for non LHC purposes KLOUKINAS Kostas EP/CME-PS