EE 230 Electronic Circuits & Systems G. Tuttle

Drift current practice problems
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A piece of silicon is n-type with a uniform donor doping concentration of NN = 6.0e+15 cm-3.
The electron mobility is μn = 1.25e+3 cm2/V·s.
What are the conductivity and resistivity of this silicon?

You would like to make rectangular resistor with value R = 27 kΩ in this silicon.
The resistor's cross-sectional dimensions are: W = 4 μm and t = 1.33 μm.
What length should the resistor have?

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