74.3.3. Caution on Common Mode Gain

Try these first

1. 1.

   What is the main function of a differential amplifier?

   Hint

   Think about the name 'differential' and what it implies.

2. 2.

   Why is common mode gain important?

   Hint

   Consider its impact on the quality of the output signal.

3. 3.

   What does a differential amplifier primarily amplify?

   • Common mode signals
   • The average of two signals
   • The difference between two signals

   Hint

   Think about what the word 'differential' means.

4. 4.

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

   • True
   • False

   Hint

   Reflect on what we want to suppress.

5. 5.

   Describe how to design a differential amplifier that effectively minimizes common mode gain while maximizing differential gain. What considerations should be made?

   Hint

   Think about how feedback might help stabilize the situation.

6. 6.

   Evaluate a real-world scenario where differentiating between signal and noise is critical. How would you implement a differential amplifier system to ensure reliable performance?

   Hint

   Analyze specific environmental factors and choose suitable configurations.