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Unformatted text preview: V ds = V dd − V rd = 5 − 0.1 20 = 3 V Step 4: Check that the inequalities are satisfied for the mode of operation chosen in Step 1. If the inequalities are not satisfied, then make another guess on the region. For the saturation region, the following conditions must be upheld: V gs V th and V ds V gs − V th . Since both conditions are satisfied for the calculations for id and V ds above, then the initial guess is correct, and the problem is solved. Therefore, i d = 0.1 mA and V ds = 3 V. [Exercise 1]: For the above example, try guessing the triode region, then show that the triode region would be an incorrect guess. [Exercise 2]: Try the same example with a PMOS transistor....
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 Summer '07
 Boser
 saturation region, Vgs, draintosource voltage Vds

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