20.1.1. Overview of Linearization in Non-Linear Circuits

Try these first

1. 1.

   What does MOSFET stand for?

   Hint

   Think about the structure and operation.

2. 2.

   Define Q-point in MOSFET circuits.

   Hint

   What point do we use to analyze small changes?

3. 3.

   What is the primary purpose of linearizing a circuit?

   • To complicate calculations
   • To simplify analysis
   • To ignore non-linear effects

   Hint

   Think about how engineers deal with complex relationships.

4. 4.

   True or False: The Q-point is only important for linear circuits.

   • True
   • False

   Hint

   Consider the purpose of the Q-point.

5. 5.

   Given a non-linear output characteristic of a MOSFET, identify the Q-point and linearize the transfer function. Describe the implications on circuit performance if the Q-point is not properly identified.

   Hint

   What key values do you need to find the Q-point?

6. 6.

   Design a small signal model for a common source amplifier. Use numerical values to calculate the gain and input-output relationship in the small signal regime.

   Hint

   Remember that gain is related to the ratio of output and input small signal voltages.