12;.3. Department of Electronics and Electrical Communication Engineering

Try these first

1. 1.

   What is the primary charge carrier in a p-MOSFET?

   Hint

   Think of the opposite of electrons.

2. 2.

   What type of voltage is required at the gate of a p-MOSFET for it to conduct?

   Hint

   Consider the biasing that enables conduction.

3. 3.

   What is the main charge carrier in a p-MOSFET?

   • Electrons
   • Holes
   • Both

   Hint

   Memorize the difference in charge carriers.

4. 4.

   Is the threshold voltage important for p-MOSFET operation?

   • True
   • False

   Hint

   Consider what happens if the threshold voltage is not met.

5. 5.

   A design requires two p-MOSFETs in series. If the first has a threshold voltage of -2V and the second -3V, what biasing voltage range should you consider to ensure proper operation?

   Hint

   Recall that both devices need to meet their threshold voltage to operate correctly.

6. 6.

   Given a p-MOSFET has a mobility of 400 cm^2/Vs, a channel length of 10 μm, and a threshold voltage of -1V. Calculate the expected drain current if a gate-source voltage of -2V is applied.

   Hint

   Make sure to plug in the numbers carefully and check units.