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4 cards from this section. Quick, good the night before a test.
What is the primary purpose of a differential amplifier?
Think about its operational advantage over single-ended amplifiers.
Define common-mode signal.
It is usually unwanted.
What is the main function of a differential amplifier?
Consider what they aim to achieve in signal processing.
True or False: Common-mode signals are typically desired in differential amplifiers.
Think about the definition of common-mode signals.
Assume you have a differential amplifier with a differential voltage of 2V and a common-mode voltage of 1V. If the common-mode gain is 0.1 and the differential gain is 50, what will be the output voltage?
Use both the differential and common-mode formulas for output.
In a single-ended system, you measure a noise voltage that is significantly affecting the signal. Propose a circuit modification using differential signaling to address this issue.
Think about how cancellation works with two signals.
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