3.2.3 - Common-Mode Rejection Ratio (CMRR)
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Practice Questions
Test your understanding with targeted questions
What does CMRR stand for?
💡 Hint: Consider what it means in relation to operational amplifiers.
How is CMRR calculated?
💡 Hint: Remember the definitions of open-loop gain and common-mode gain.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the purpose of CMRR in an operational amplifier?
💡 Hint: Think about what CMRR stands for.
True or False: A high CMRR is desirable in operational amplifiers.
💡 Hint: Consider its importance in audio applications.
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Challenge Problems
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An op-amp has an open-loop differential gain of 400 and a common-mode gain of 10. Calculate the CMRR in both ratio and decibels.
💡 Hint: Use both the ratio and the decibel formula.
Describe a scenario where low CMRR could lead to failure in an application. Explain the impact.
💡 Hint: Think about the function of the device and consequences of noise.
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