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Lecture8-Wires-Transistors

Lecture8-Wires-Transistors - EE141 EE141 EECS141 Lecture#8...

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EE141 1 EECS141 1 Lecture #8 EECS141 2 Lecture #8 Hw 3 due today – HW 4 to be posted No Lab next week Extra review session Th at 6:30pm
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EE141 2 EECS141 3 Lecture #8 Last lecture Logical Effort + Wires Today’s lecture Wiring (cntd) – Transistor models Reading (Ch 3, 4) EECS141 4 Lecture #8
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EE141 3 EECS141 5 Lecture #8 EECS141 6 Lecture #8
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EE141 4 EECS141 7 Lecture #8 Use Better Interconnect Materials e.g. copper, silicides More Interconnect Layers reduce average wire-length Selective Technology Scaling (More later) EECS141 8 Lecture #8 Silicides: WSi 2, TiSi 2 , PtSi 2 and TaSi Conductivity: 8-10 times better than Poly
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EE141 5 EECS141 9 Lecture #8 EECS141 10 Lecture #8
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EE141 6 EECS141 11 Lecture #8 What to do with the resistance? EECS141 12 Lecture #8 • Analysis method: • Break the wire up into segments of length dx • Each segment has resistance (r dx) and capacitance (c dx)
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EE141 7 EECS141 13 Lecture #8 The diffusion equation EECS141 14 Lecture #8
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EE141 8 EECS141 15 Lecture #8
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