EECE 363 Quiz 4B 2008 Solutions

The time allotted to complete this quiz is 60 minutes

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Unformatted text preview: or is also permitted. • The time allotted to complete this quiz is 60 minutes. Kenichi Takahata Name: Student ID#: NUMBER MAX 1 4 2 6 3 6 4 14 TOTAL 30 GRADE 1) The enhancement-type PMOS transistors Q1 and Q2 in the circuit below are characterized by ⎛W ⎞ the following parameters: k p ' ⎜ ⎟ = 2 mA/V2, Vt = −1 V, and VA=∞. Find the values for ID ⎝L⎠ and VDS for both transistors. (Suggested time to spend: 5 min) (4 points) VGS1 = VDS1 (∴Saturation) VGS2 = VDS2 (∴Saturation) ID1 = ID2 = ID, then VGS1 = VGS2 and VDS1 = VDS2 = VDS 2|VDS| = 3 V or |VDS| = |VDS1| = |VDS2| = 1.5 V ID = (1/2)kp’(W/L)(VGS − Vt)2 = (1mA/V2)[−1.5V − (−1V)]2= 0.25 mA -2- 2) The enhancement-type NMOS transistors Q1 and Q2 in the circuit below have Vt = 0.6 V, k...
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