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A PMOS device with VT P = −1.2 V has a drain current iD = 0.5 mA when vSG = 3 V and vSD = 5 V. Calculate the drain current when: (a) vSG = 2 V, vSD = 3 V; (b) vSG = 5 V, vSD = 2 V.

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marya75
The answer is b ! Hope I helped

The drain current based on the information given about the PMOS device is 1.72816mA.

How to calculate the current?

The formula for the drain current will be:

= K(VSG + VTP)2

0.5 = k(3 - 1.2)2

k = 0.1543

The drain current in the saturation region for PMOS is 0.098752. Therefore, the drain current in triode region for PMOS will be:

= 0.1543[2(5 - 1.2)](2 - 2.2)

= 0.1543(2 × 3.8 × 2) - 4

= 0.1543(15.2 - 4)

= 0.1543 × 11.2

= 1.72816mA

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