74.4.3. Single-Ended to Differential Amplifier

Try these first

1. 1.

   What is a differential amplifier?

   Hint

   Think of how it deals with unwanted noise.

2. 2.

   Define common mode signal.

   Hint

   What interference appears on both input lines?

3. 3.

   What is the primary function of a differential amplifier?

   • To amplify only common mode signals
   • To amplify the difference between two signals
   • To reduce noise only

   Hint

   Remember what makes differential amplifiers unique.

4. 4.

   True or False: Differential signaling can help mitigate noise while transmitting signals.

   • True
   • False

   Hint

   Think about the nature of the signals being sent.

5. 5.

   Suppose you have a differential amplifier with a differential mode gain of 100 and a common mode gain of 0.01. Analyze the effect of these gains on signal clarity in a practical scenario.

   Hint

   Consider how these gains interact when signals are transmitted.

6. 6.

   In a communication system, the transmitted pair of signals experiences a common mode noise of 200 mV while the true differential signal is only 50 mV. Discuss the feasibility of distinguishing the true signal using a differential amplifier.

   Hint

   Examine the relative sizes of the signals.