74.5.2. Op-Amp Configuration

Try these first

1. 1.

   What is the primary purpose of a differential amplifier?

   Hint

   Think of it as a device that focuses on differences.

2. 2.

   Why is it important for the common mode gain to be low?

   Hint

   Consider what happens if noise is amplified along with the desired signal.

3. 3.

   What is the primary function of a differential amplifier?

   • Amplifies all signals equally
   • Amplifies the difference between two input signals
   • Rejects all signals

   Hint

   Focus on what is amplified.

4. 4.

   True or False: The common mode gain should be high for effective performance of differential amplifiers.

   • True
   • False

   Hint

   Consider the relationship of common mode signals.

5. 5.

   Consider a differential amplifier used in a distance sensor system. You're receiving weaker signals due to noise interference. Propose a solution to increase the signal quality.

   Hint

   What types of amplifiers can you suggest that could help?

6. 6.

   Critically analyze a scenario where an op-amp with high common mode gain is used. Discuss possible circuit redesigns to prevent issues.

   Hint

   Consider circuit elements that prioritize differential amplification.