Practice Common-mode Rejection Ratio (cmrr) (3.2.3) - Analog CMOS Circuit Design - Part 1: Design Principles of Operational Amplifiers in CMOS

Practice: Common-Mode Rejection Ratio (CMRR)

Lesson 3.2.3Analog CMOS Circuit Design - Part 1: Design Principles of Operational Amplifiers in CMOS

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8 questions

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6 sample questions

Question 1.
What does CMRR stand for?
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Consider what it means in relation to operational amplifiers.
Question 2.
How is CMRR calculated?
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Remember the definitions of open-loop gain and common-mode gain.
3Question 3.
What is the purpose of CMRR in an operational amplifier?
- To increase output power
- To filter out common signals
- To amplify all inputs
- To reduce output impedance
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Think about what CMRR stands for.
4Question 4.
True or False: A high CMRR is desirable in operational amplifiers.
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Consider its importance in audio applications.
Question 5.
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.
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Use both the ratio and the decibel formula.
Question 6.
Describe a scenario where low CMRR could lead to failure in an application. Explain the impact.
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Think about the function of the device and consequences of noise.

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