Lecture11-Inverter - EE141 EE141 EECS141 Lecture #11 1 HW 4...

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EE141 1 EE141 EECS141 1 Lecture #11 EE141 EECS141 2 Lecture #11 HW 4 due on Friday No re-grades on MT1 after next Wednesday Project to be launched in week 7 – stay tuned
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EE141 2 EE141 EECS141 3 Lecture #11 0 2 4 6 8 10 12 12-14 15-17 18-20 21-23 24-26 27-29 30-32 33-35 36-38 39-41 Score Histogram Max: 40 Mean: 27.9 Median: 28.1 Stdev: 5.97 EE141 EECS141 4 Lecture #11
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EE141 3 EE141 EECS141 5 Lecture #11 = C GCS + C GSO = C GCD + C GDO = C GCB = C diff G S D B = C diff EE141 EECS141 6 Lecture #11 Capacitance (per area) from gate across the oxide is W·L·C ox , where C ox = ε ox /t ox
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EE141 4 EE141 EECS141 7 Lecture #11 C gate vs. V GS (with V DS = 0) C gate vs. operating region EE141 EECS141 8 Lecture #11 Off/Lin/Sat C GSO = C GDO = C O · W
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EE141 5 EE141 EECS141 9 Lecture #11 C OV not just from metallurgic overlap – get fringing fields too Typical value: ~0.2fF·W(in μm)/edge Cross section n + n + Fringing fields EE141 EECS141 10 Lecture #10 Bottom Side wall Side wall Channel Source Substrate W N A + N A L S N D x j Bottom – Area cap – C bottom = C j ·L S ·W Sidewalls – Perimeter cap – C sw = C jsw ·(2L S +W) GateEdge – C ge = C jgate
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Lecture11-Inverter - EE141 EE141 EECS141 Lecture #11 1 HW 4...

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