Multiple choice

For the n-channel MOS transistor shown in the figure, the threshold voltage VTH is 0.8 V. Neglect channel length modulation effects. When the drain voltage VD = 1.6 V, the drain current ID was found to be 0.5 mA. If VD is adjusted to be 2 V by changing the values of R and VDD, the new value of ID (in mA) is

  1. 0.625

  2. 0.75

  3. 1.125

  4. 1.5

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C Correct answer
Explanation