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Microelectronics & VLSI at IIT Bombay: Academic Programmes

Microelectronics & VLSI at IIT Bombay: Academic Programmes. J. Vasi Department of Electrical Engineering Indian Institute of Technology, Bombay 2003. Academia Industry Meet 2003, Electrical Engineering Department. Overview.

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Microelectronics & VLSI at IIT Bombay: Academic Programmes

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  1. Microelectronics & VLSI at IIT Bombay:Academic Programmes J. Vasi Department of Electrical Engineering Indian Institute of Technology, Bombay 2003 Indian Institute of Technology Bombay

  2. Academia Industry Meet 2003, Electrical Engineering Department Overview • The Microelectronics Program is a part of EE Department at IIT Bombay • Microelectronics includes VLSI Design • Links with the CS&E and ME&MS Departments • Started in 1986; one of the oldest programs in the country • Main thrust in silicon CMOS design, VLSI CAD, CMOS technology and devices, MEMS • Group consists of 12 core faculty in EE Department, plus several others in related Departments Indian Institute of Technology Bombay

  3. P. R. Apte A. N. Chandorkar M. P. Desai S. Duttagupta R. Lal S. Mahapatra B. Gadepally (Adjunct) H. Narayanan R. Parekhji (adjunct) M. B. Patil V. Ramgopal Rao D. K. Sharma J. Vasi R. Pinto Academia Industry Meet 2003, Electrical Engineering Department Faculty Indian Institute of Technology Bombay

  4. Academia Industry Meet 2003, Electrical Engineering Department Associated Faculty • A. Karandikar Elec. Engg. • D. Manjunath Elec. Engg. • S. S. S. P. Rao Comp. Sci. & Engg. • S. Chakrabarty Comp. Sci. & Engg. • M. Sohoni Comp. Sci. & Engg. • S. Patkar Maths • R. O. Dusane Met. Eng. & Mat. Sci. • R. Srinivasa Met. Eng. & Mat. Sci. • A. Contractor Chemistry Indian Institute of Technology Bombay

  5. Academia Industry Meet 2003, Electrical Engineering Department Teaching Programs • Ph.D. (graduating ~ 3-4 / year) • M.Tech. with specialization in Microelectronics (~ 35 / year) • Dual Degree with specialization in Microelectronics (~ 18 / year) • B.Tech. (~ 55 / year, ~ 15 / year with projects in Micro-electronics) Indian Institute of Technology Bombay

  6. Academia Industry Meet 2003, Electrical Engineering Department Highlights of the Ph.D. Program • About 15 Ph.D. students at any time • Institute scholarship, industry fellowship or sponsored project assistantship • Typical duration 3 – 5 years • Industry fellowships from Intel, Siemens, GE • Most full-time, some part-time Indian Institute of Technology Bombay

  7. Academia Industry Meet 2003, Electrical Engineering Department Some Recent and Ongoing Ph. D. Theses • S. Vaidya: Neutron radiation effects in MOS systems • J. Meckie: Asynchronous design issues • G. Trivedi: Parallel algorithms for VLSI optimization • N. Mahapatra: High-k dielectrics for 100 nm CMOS • A. Shastry: Microcapillary electrophoresis on silicon • C.A. Betty: Capacitive immunosensor on porous Si • B. Anand: Digital design with dynamic threshold CMOS • D. Nair: Flash memory design and reliability • D.V.Kumar: Look-up table approach for CMOS circuits Indian Institute of Technology Bombay

  8. Academia Industry Meet 2003, Electrical Engineering Department Highlights of the M.Tech. Program • 2 year program with specialization “Microelectronics” • Emphasis on both Devices and VLSI Design • Attracts the top students in the country (GATE percentile > 99%) • 35 students admitted every year, including 20 TCS scholars • 18-month-long M.Tech. project • Placement in Indian and international semiconductor and design companies Indian Institute of Technology Bombay

  9. Semester I Physical Electronics VLSI Technology VLSI Design VLSI Design Lab M.Tech. Seminar Elective I (one of the following) 1. Foundations of VLSI CAD 2. Hardware Description languages 3. DSP and Applications Semester II Microelectronics Lab M.Tech. Project: Stage I Electives II, III, IV (3 out of the following) System Design Physics of Transistors 3. Analog CMOS design 4. MEMS Technology and design 5. Embedded Systems 6. Hardware test and verification 7. Simulation of circuits and devices Academia Industry Meet 2003, Electrical Engineering Department Structure of the M.Tech. Microelectronics Program Indian Institute of Technology Bombay

  10. Semester III M.Tech. Project : Stage II Elective V (one out of the following) 1. Foundations of VLSI CAD 2. Hardware description Languages 3. DSP and Applications 4. Special topics in Microelectronics 5. RF chip design 6. Elective from other departments Semester IV M. Tech. Project : Stage III Academia Industry Meet 2003, Electrical Engineering Department Structure of the M.Tech. Microelectronics Program Indian Institute of Technology Bombay

  11. Academia Industry Meet 2003, Electrical Engineering Department Highlights of the Dual Degree (DD) Program • 5 year program with specialization “Microelectronics” • Students receive both B.Tech. and M.Tech. degrees at the end of 5 years • Entry through JEE, 3rd most popular branch at IIT Bombay after B.Tech. (CS&E) and B.Tech. (EE) • Emphasis on both Devices and VLSI Design • 15 students admitted every year • Highlight is emphasis on independent study with 18- month-long DD project • Placement in Indian and international semiconductor and design companies as well as for Ph.D. • First DD batch admitted in 1996 – 7th batch admitted in 2002 Indian Institute of Technology Bombay

  12. Academia Industry Meet 2003, Electrical Engineering Department Structure of the Dual Degree Program • I year and II year semesters are identical to the B.Tech. (EE) programme • From III year onwards, M.Tech. level courses are introduced • Many “independent-study” courses like DD Project, DD Seminar, Miniproject, Lab Techniques, Research Seminar, etc. • DD Project starts in 8th semester, and continues through the 10th semester (18 months), including 2 summer sesions Indian Institute of Technology Bombay

  13. Academia Industry Meet 2003, Electrical Engineering Department Areas of R & D and Student Projects • VLSI modeling and simulation • VLSI design (digital, analog, mixed-mode) • VLSI CAD tool development • Interaction between VLSI technology and design • Silicon CMOS physics and technology • MEMS • Organic LED’s for display applications • Flexible solar cells • Flash memory: Characterization Analysis, Reliability Study, Device Scaling. Indian Institute of Technology Bombay

  14. Academia Industry Meet 2003, Electrical Engineering Department Facilities • Class 1000 Clean Room • Excellent characterization facility • SEM; photoluminescence • VLSI design workstations • Simulation workstations • Intel Microelectronics Lab • TCS VLSI Design Lab • Wadhwani Electronics Laboratory Indian Institute of Technology Bombay

  15. Academia Industry Meet 2003, Electrical Engineering Department Collaborations • Industry sponsorship of Ph.D., M.Tech. and DD students: TCS, Intel, TII, Sasken, Analog, Cypress, Siemens, GE, IME, etc. • Research Projects with Indian industry: BEL, ITI, Sasken, TII, Cypress, ControlNet, etc • Research Projects with international industry: Intel, Motorola, GE, Siemens, National, IME, Agere, Hitachi, IBM • Government Agencies: DST, ISRO, NPSM (National Programme on Smart Materials), MHRD, NRB Indian Institute of Technology Bombay

  16. Academia Industry Meet 2003, Electrical Engineering Department University Collaborations • Collaborations with other IITs, Universities of Bombay, Pune • Collaborations with International universities like • UCLA, UCSB, Yale University (USA) • Hong Kong University of Science & Tech. (HK) • Delft University (The Netherlands) • University of Bundeswehr (Germany) • Griffith University (Australia) • NTU, NUS (Singapore) Indian Institute of Technology Bombay

  17. Academia Industry Meet 2003, Electrical Engineering Department Conclusions • Most active Microelectronics & VLSI group in India • Major teaching programs at all levels • 110 – 120 graduate students resident in Microelectronics and VLSI group at any time • 35 M.Tech, 18 DD and 3 Ph.D. students graduating every year • Excellent teaching & research facilities • Student project sponsorships from Indian & international industry Indian Institute of Technology Bombay

  18. Academia Industry Meet 2003, Electrical Engineering Department Contacts • Microelectronics Group Department of Electrical Engineering Indian Institute of Technology, Bombay Powai Mumbai 400076 India • Phone: +91-22-2572-4482 • Fax: +91-22-2572-3707 • email: me@ee.iitb.ac.in • website: www.iitb.ac.in/~microel/ Indian Institute of Technology Bombay

  19. SEQUEL: A Solver for circuit EQuations with User-defined ELementsProf. Mahesh B. Patilwww.ee.ittb.ac.in/faculty/mbp/sequel1.html Indian Institute of Technology Bombay

  20. Academia Industry Meet 2003, Electrical Engineering Department SEQUEL: Features • Allows user-defined elements • DC, transient, small-signal, noise • Mixed-signal simulation • Electrothermal simulation • Sensitivity analysis (exact) • Switched capacitor circuits • Efficient “steady-state waveform” computation • Perfectly “general” elements are possible (mechanical, thermal etc) Continued Indian Institute of Technology Bombay

  21. Academia Industry Meet 2003, Electrical Engineering Department Collaboration based on SEQUEL • DST (Circuit Simulation using the LUT approach) • PEPS group at IIT Bombay • IISc Bangalore (Power electronics text book) • Department of BME, IIT Bombay • Intel (study of NQS effects in MOS transistors) • IME (Circuit simulation using experimentally extracted tables) Indian Institute of Technology Bombay

  22. Fast Circuit Simulators at IIT Bombay Prof. H.Narayanan hn@ee.iitb.ac.in Indian Institute of Technology Bombay

  23. Academia Industry Meet 2003, Electrical Engineering Department BREMICS (1986, 87, 90) for analog simulation of networks arising out of digital circuits (MOS transistors, resistors, capacitors) • could handle 1000 nodes, 2000 edges. For the restricted class much faster (5 to 10 times) than SPICE on PCs. • BITSIM (1991-92) general purpose (SPICE like) simulator based on conjugate gradient method for solution of linear equations and the hybrid analysis for writing equations. Could handle 3000-4000 nodes, 8000 edges originally on SUN, now on Pentiums. Work done through several B.Tech and M.Tech. projects and through a research engineer (Dr. Subir Roy) Indian Institute of Technology Bombay

  24. Academia Industry Meet 2003, Electrical Engineering Department Currently “Large Circuit Simulations” by Parallelization is actively pursued The innermost subroutine of a general purpose simulator is a DC circuit analyzer (voltage sources, current sources, resistors, controlled sources) We parallelize this by the “Multiport Decomposition Method” Our simulator can currently solve 700,000 nodes, 1.4 million edges dc circuit in about 5 minutes using 5 processors (Pentium IV ‘s) connected through a 100 MBPS link Indian Institute of Technology Bombay

  25. Academia Industry Meet 2003, Electrical Engineering Department Application of large dc circuit analyzer 1) The Multi port Reduction Problem 100,000 RC Elements Few terminals Same terminal behaviour Same terminal behaviour 1000 RC Elements arises while modelling “short circuits” in chips at high frequency Continued Indian Institute of Technology Bombay

  26. Academia Industry Meet 2003, Electrical Engineering Department we have constructed a few such reduction algorithms and implemented them. e.g. SARN reduces RC circuit with 100,000 nodes 200,000 edges 50 terminals in ½ hour to 1000 node circuit with 50 terminals. 2) Solving a large Combinational optimization problems a) Network flow problems b) Minimum cost flow problems Both of these can be posed as nonlinear static circuit analysis problems Innermost subroutine is a DC analyzer. Continued Indian Institute of Technology Bombay

  27. Academia Industry Meet 2003, Electrical Engineering Department 3) Parallelizing large Sparse linear equations The equations are made to appear like those of a dc circuit and then given to the dc analyzer to solve by “Multi port Decomposition”. Indian Institute of Technology Bombay

  28. Mixed Signal CMOS Device Design and Optimization for Bulk and SOI Technologies V. Ramgopal Rao rrao@ee.iitb.ac.in

  29. Academia Industry Meet 2003, Electrical Engineering Department Outline • Scaling CMOS-Analog Performance • Device Engineering-Bulk&SOI • Process Development-Bulk&SOI • LAC-Bulk Analog Performance • LAC-SOI Analog Performance • Floating Body Effects-Channel Engineering • Circuit Implications-LAC Technologies • Hot Carrier Reliability Indian Institute of Technology Bombay

  30. Academia Industry Meet 2002, Electrical Engineering Department ANALOG AND RF DESIGNProf. D. K. Sharma • Data Converters (DKS/ANC/MPD) • Low Voltage/Low Power Design (ANC/DKS) • RF Transmitters and Receivers (ANC/DKS) • PLL and DLL circuits (ANC) • Broadband Communications related circuits (ANC/DKS) • Modeling and Simulation for RF, Analog (JV/MBP) Indian Institute of Technology Bombay

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