R. Kluit Electronics Department Nikhef, Amsterdam. Integrated Circuit Design
19/12/2008IC R. Kluit2
19/12/2008IC R. Kluit3 ASIC application’s 2 IC’s: 0.25µ CMOS 3 prototypes 9/2000 => prod 3/ PCB’s, IC’s (prod. $43k) Chip-on-board; cleaning & Nikhef ++ Radiation & Area 2004 V. Gromov, P. Timmer, J-D Schipper, R. Kluit
19/12/2008IC R. Kluit4 Design in Collaborations: Si-strip detector front-end (0.25µm) Analog readout & Comparator Contribution to new ATLAS Pixel FE chip Design Internal: IC’s for ALICE (0.25µm) Bandgap reference (130nm) GOSSIP frontend prototype’s (130nm) Km3Net PMT front-end (0.35µm) Most recent Designs
CMOS IC technology Design issues: RregVt, 0Vt, HighVt, LowVt transistors Radiation tolerance (design) Technology Design rules Process variations & matching ESD Rules for Manufacturability 19/12/2008IC R. Kluit5 Bulk CMOS
Present Technologies 19/12/2008IC R. Kluit6 Bulk CMOSSOI Strained silicon Vdd VVdd VVdd 1-1.2VVdd 1VVdd 0.9-1V 6 Al6 Cu7 Cu8 Cu9 Cu feature size: Mass prod. start: Power & gate density scale relative to feature size scaling (x0.7). Vsupply Nr. metal layers radiation tolerant !????
“Features” of new Techn. Random Dopant Fluctuations ~100 atoms channel length, 1000 dopants in channel Variations in strain & Gate oxide thickness (~ 5 Line Edge effects: R of connectivity Solutions in Foundry & Design techniques; Global process variations of 45nm improved w.r.t. 90nm & 65nm ! 19/12/2008IC R. Kluit7
Euro Practice Cadence platform: Cadence:design entry & layout + analog & digital simulation. Assura: Simulation & Verification Mentor: Calibre for DRC & extraction (Ver.) Synopsys: Logic Simulation, Digital Synthesis, Clock tree generation, Place & Route. Software via Educational programs; affordable (€) BUT maintenance ¼ fte. 19/12/2008IC R. Kluit8 Design Tools
19/12/2008IC R. Kluit9 ET Design expertise Technologies: Commercial CMOS AMS 0.35µ: Design-Kit + Lib. IBM 0.25µ PDK + Lib. IBM 0.13µ: PDK + Arm/IBM Lib. People & Expertise : (Electronics department) 2+2 Designers have the skills for IC design. Analog front-ends; device level circuit design Digital design; control blocks & architecture Verilog => synthesis => routing.
Present Technologies (2) Transition to SOI, Vdd to ~1V Radiation tolerance: increasing up to 90nm. Beyond ??? 19/12/2008IC R. Kluit10 ~0.7 2 ~ ~0.7 ~0.7 -2