4.9. Common MOSFET Configurations

Try these first

1. 1.

   What are the three common configurations of MOSFETs?

   Hint

   Remember the terms we just discussed.

2. 2.

   Which configuration is typically used for buffering?

   Hint

   Think about where the output connects and its properties.

3. 3.

   What is the main function of a Common Gate configuration?

   • High voltage gain
   • Wide bandwidth amplification
   • Low input impedance

   Hint

   Think about the frequency response.

4. 4.

   True or False: The Common Source configuration is used primarily for buffering.

   • True
   • False

   Hint

   Recall the purpose of each configuration.

5. 5.

   Discuss how you would design a circuit that requires amplification of audio signals, specifying which MOSFET configuration you would employ and why.

   Hint

   Consider the characteristics that affect audio quality.

6. 6.

   If you had to connect an RF circuit to a low-impedance load, which configuration would you choose and justify your answer based on its properties.

   Hint

   Think about how impedance affects signal strength.