3.2 - Basic Principles of CMOS Operational Amplifiers
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What is the function of a differential pair in an op-amp?
💡 Hint: Think about what it means to amplify the difference.
Define open-loop gain.
💡 Hint: Consider the amplification that happens in an op-amp without any feedback mechanism.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary function of a differential pair in an op-amp?
💡 Hint: Think about what it means to amplify the difference.
True or False: High CMRR is important for an operational amplifier.
💡 Hint: Consider what happens when common signals are amplified along with the desired signal.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Design a basic CMOS op-amp using NMOS and PMOS transistors while defining the values for open-loop gain and input/output impedance that would meet typical application requirements.
💡 Hint: Think about how transistor configurations will affect your gain and impedance.
Given the open-loop gain of an op-amp of 1500 and a common-mode gain of 50, calculate the CMRR and discuss the implications on the amplifier's noise rejection.
💡 Hint: Use the CMRR formula as a guide.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.