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Unformatted text preview: Calculate the flatband voltage and the threshold voltage for strong inversion. (b) Sketch the high frequency C-V curve and label where the flatband voltage and threshold voltage are. Calculate the capacitance at V g = 1.5 V. Solutions: (a) 38 . ln = = i a B n N q kT ψ V 94 . 2-=--= B g fb q E V V 23 . 41 . 76 . 94 . ) 2 ( 2 2 = + +-= + + = ox B a si B fb t C qN V V ε V. (b) C V V V g t fb At V g = 1.5 V, 22 . ) 2 ( 2 = = = a B si dm d qN W W μ m 8 10 7 . 3 1 1-× = + = si dm ox W C C F/cm 2 ....
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This note was uploaded on 10/09/2010 for the course ECE 230 at UCSD.