EE 230 Electronic Circuits & Systems G. Tuttle

Drift current practice problems
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A piece of silicon is p-type with a uniform acceptor doping concentration of NA = 7.0e+17 cm-3.
The hole mobility is μp = 86 cm2/V·s.
What are the conductivity and resistivity of this silicon?

You would like to make rectangular resistor with value R = 220 Ω in this silicon.
The resistor's cross-sectional dimensions are: W = 50 μm and t = 8.33 μm.
What length should the resistor have?

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