75.5. Realization of Differential Amplifier Circuits

Try these first

1. 1.

   What does a differential amplifier amplify?

   Hint

   Think about the name itself.

2. 2.

   What are the two types of gain associated with differential amplifiers?

   Hint

   Consider the types of input signal applied.

3. 3.

   What is the primary function of a differential amplifier?

   • A. Amplify the sum of two signals
   • B. Amplify the difference between two signals
   • C. Only amplify AC signals

   Hint

   Focus on what the name implies.

4. 4.

   True or False: The common mode gain of a differential amplifier should be maximized.

   • True
   • False

   Hint

   Consider what you want to amplify vs minimize.

5. 5.

   Design a differential amplifier circuit using both BJT and MOSFET configurations. Compare their performance in terms of gain and noise rejection.

   Hint

   Use characteristics from both components in your design.

6. 6.

   In a situation where component matching isn't achievable, discuss how performance would vary in a differential amplifier.

   Hint

   Consider what would happen if components respond differently to input signals.