75.3. Basic Operation and Characterization

Try these first

1. 1.

   What does a differential amplifier amplify?

   Hint

   Think about what makes it different from other amplifiers.

2. 2.

   What should the common mode gain ideally be?

   Hint

   Remember what we want to minimize in common mode signals.

3. 3.

   What is the main function of a differential amplifier?

   • Amplifying single input
   • Amplifying the difference between two inputs
   • Rejecting all signals

   Hint

   Think about how it compares inputs.

4. 4.

   True or False: A high common mode gain is desirable in differential amplifiers.

   • True
   • False

   Hint

   Reflect on what we discussed about signal clarity.

5. 5.

   Design a differential amplifier using BJTs and specify how you would ensure component matching.

   Hint

   Think about the specifications and how component values influence performance.

6. 6.

   Given that Ad = 75 and Ac = 3, discuss the implications of these values on performance in a real-world setting.

   Hint

   Consider the applications where clarity is essential.