3.3.4. Output Stage

Try these first

1. 1.

   What is the primary role of the output stage in CMOS op-amps?

   Hint

   Think about how the output connects to other components.

2. 2.

   What type of transistors are typically used in a Class AB configuration?

   Hint

   Consider the two types of MOS transistors in CMOS technology.

3. 3.

   What is the primary function of the output stage in a CMOS operational amplifier?

   • To filter signals
   • To drive the load
   • To amplify noise

   Hint

   Consider the relationship between the op-amp and its load.

4. 4.

   True or False: A Class AB configuration only uses NMOS transistors.

   • True
   • False

   Hint

   Think about the types of transistors in CMOS technology.

5. 5.

   Design a simple output stage for a CMOS op-amp and explain the choice of transistors used in the push-pull configuration.

   Hint

   Think about how each transistor functions during different phases of the signal.

6. 6.

   Evaluate the impact of increasing load resistance on the output stage's performance and discuss how it relates to distortion.

   Hint

   What happens to current when the load resistance increases?