3.4. Performance Metrics in CMOS Operational Amplifiers

Try these first

1. 1.

   What is the slew rate?

   Hint

   Think about how fast the output reacts to input changes.

2. 2.

   What does total harmonic distortion (THD) measure?

   Hint

   It's about comparing the original signal and the altered one.

3. 3.

   What does slew rate measure?

   • Speed of signal processing
   • Rate of output voltage change
   • Input voltage range

   Hint

   Focus on how quickly the op-amp output can react.

4. 4.

   True or False: Unity gain bandwidth indicates the frequency at which gain is less than 1.

   • True
   • False

   Hint

   Remember the definition of GBW.

5. 5.

   An audio amplifier has a THD of 3%. If the original signal is at 1 V, what is the total distortion in comparison to the desired clean output?

   Hint

   Calculate using the formula: Distorted output = Original output × (1 + THD).

6. 6.

   If an op-amp exhibits a slew rate of 10 V/μs, how fast can it respond to a 30 V step input? Calculate the time taken for the output to reach that value.

   Hint

   Relate the problem to how long it takes to travel a certain distance.