cmos transistor size (3g) - wikimedia commons · size (3g) 3 young won lim 4/1/16 transconductance...
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![Page 1: CMOS Transistor Size (3G) - Wikimedia Commons · Size (3G) 3 Young Won Lim 4/1/16 Transconductance Parameter](https://reader031.vdocuments.us/reader031/viewer/2022022509/5ad4a2187f8b9a5d058c1bff/html5/thumbnails/1.jpg)
Young Won Lim4/1/16
CMOS Transistor Size (3G)
![Page 2: CMOS Transistor Size (3G) - Wikimedia Commons · Size (3G) 3 Young Won Lim 4/1/16 Transconductance Parameter](https://reader031.vdocuments.us/reader031/viewer/2022022509/5ad4a2187f8b9a5d058c1bff/html5/thumbnails/2.jpg)
Young Won Lim4/1/16
Copyright (c) 2011-2016 Young W. Lim.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".
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Size (3G) 3 Young Won Lim4/1/16
Transconductance Parameter
βn
β p= 1.0
βn
βp= 1.5
βn
βp= 2.0
I d = k 'WL [(v gs − v t)v ds −
12
vds2 ]
I d =12
k 'WL
(v gs − v t)2
When VGS
> Vt and V
DS < ( V
GS – V
t )
When VGS
> Vt and V
DS ≥ ( V
GS – V
t )
βn = k 'n(WL )n
βp = k ' p(WL )p
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Size (3G) 4 Young Won Lim4/1/16
Channel Length
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Size (3G) 5 Young Won Lim4/1/16
Transistor Dimensions
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Size (3G) 6 Young Won Lim4/1/16
Capacitances of S, D, G
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Size (3G) 7 Young Won Lim4/1/16
Assume all the same cap (for hand calculation)
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Size (3G) 8 Young Won Lim4/1/16
Equal Size
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Size (3G) 9 Young Won Lim4/1/16
Equal Resistance
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Size (3G) 10 Young Won Lim4/1/16
A Unit Inverter
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Size (3G) 11 Young Won Lim4/1/16
Cascade Inverter Modeling
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Size (3G) 12 Young Won Lim4/1/16
Characteristic Curve
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Young Won Lim4/1/16
References
[1] http://en.wikipedia.org/[2] http://www.allaboutcircuits.com/[3] W. Wolf, “Modern VLSI Design : Systems on Silicon[4] N. Weste, D. Harris, “CMOS VLSI Design: A Circuits and Systems Perspective”[5] J. P. Uyemura, “Introduction to VLSI Circuits and Systems”[6] https://en.wikiversity.org/wiki/The_necessities_in_SOC_Design[7] https://en.wikiversity.org/wiki/The_necessities_in_Digital_Design[8] https://en.wikiversity.org/wiki/The_necessities_in_Computer_Design[9] https://en.wikiversity.org/wiki/The_necessities_in_Computer_Architecture[10] https://en.wikiversity.org/wiki/The_necessities_in_Computer_Organization[11] https://en.wikiversity.org/wiki/Verilog_programming_in_plain_view