Informatisches Kolloquium Roy: VLSI Circuits
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Informatisches Colloquium Donnerstag, 4. November 1999, 17 Uhr c.t. Konrad-Zuse-Hörsaal |
Referent
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Prof. Dr. Kaushik Roy Purdue University |
Thema
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Design of Next Generation VLSI Circuits |
Zusammenfassung
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With the increasing trend toward portable computing and wireless
communications, power dissipation has become an important design
consideration. Research has started in earnest to reduce power dissipation
at all levels of design abstraction. In the first part of the talk I will
give an overview of our research to lower power dissipation at various
levels of design abstraction - from algorithm/architecture to
circuits/devices. In this second part of the talk I will consider leakage control techniques to reduce static power dissipation. Low supply voltage requires the device threshold to be reduced in order to maintain the performance. Due to the exponential relationship between the leakage current and the transistor threshold voltage in the weak inversion region, leakage current (and hence, leakage power) can no longer be negligible. We will present different design techniques such as multiple threshold voltage, dynamic threshold control, and leakage control using transistor stacking to achieve large improvements in leakage power during both stand-by and active mode of operation. Issues related to testing of CMOS circuits under high intrinsic leakage will also be considered. |
Kontakt
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Prof. Dr. Bärbel Mertsching Telefon 040 - 42883 2440 |
Koordination
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Prof. Dr. W. v. Hahn (vhahn"AT"informatik.uni-hamburg.de) |