Midterm 2 Solutions 08

0v vds15v is the transistor operating in linear

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Unformatted text preview: kT ⎛ N a ⎞ ln ⎜ = 0.026 ⋅ ln ⎜ 10 ⎟ = 0.42 ⎟ q ⎝ ni ⎠ ⎝ 10 ⎠ 2ε s qN a 2φB Vt = V fb + 2φB + Cox φB = Cox = 2ε s qN a 2φB Vt − V fb − 2φB 2 ⋅11.7 ⋅ 8.8542 ×10−14 F ⋅1.6 ×10−19 C ⋅1017 cm −3 ⋅ 2 ⋅ 0.42 cm = = 4.64 × 10−7 F 2 cm 1.2 − 2 ⋅ 0.42 −14 F 25 ⋅ 8.8542 ×10 ε cm = 4.77 × 10−6 cm = 47.7nm Tox = ox = −7 F Cox 4.64 ×10 cm 2 (c) [5pts] Vdsat = If Vgs-Vt=1.0V, Vds=1.5V, is the transistor operating in linear region or saturation region? Vgs − Vt m = 1.0 < Vgs − V...
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This note was uploaded on 01/24/2014 for the course EE 130 taught by Professor Ee130 during the Fall '07 term at Berkeley.

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