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 = 7.0e+16 cm-3.
The electron mobility is μn = 760 cm2/V·s.
What are the conductivity and resistivity of this silicon?

You would like to make rectangular resistor with value R = 5.6 kΩ in this silicon.
The resistor's cross-sectional dimensions are: W = 10 μm and t = 1.43 μm.
What length should the resistor have?

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