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Hi, I am a little bit confused about part b. If someone could please correct me, during my lesson, I learned that saturation means that the absolute value of Vds must be greater than the absolute value of (Vgs-Vt). From the circuit, I see that |-7.6| is greater than |-5-(-1.5)|. So I can assume saturation. However, when I try the formula, I get (0.5)(80)(-5-(-1.5))^2*(1+|0.02|)=480.2, which is supposedly incorrect.

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  • \$\begingroup\$ What's the answer given? \$\endgroup\$ – Mitu Raj Nov 25 '17 at 4:11
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In your formula for Ids in saturation region, (1+ |0.02 * Vds|) is the multiplication factor, when channel length modulation is considered. You forgot to multiply Vds with lambda.

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