66.2.4. Practical Circuits Having the Active Load

Try these first

1. 1.

   What is the main advantage of using active loads in amplifiers?

   Hint

   Consider how passive loads restrict performance.

2. 2.

   Describe a common emitter amplifier configuration.

   Hint

   Think about the signal chain in the amplifier.

3. 3.

   What is the function of an active load?

   • Enhance data processing
   • Improve gain characteristics
   • Reduce power consumption

   Hint

   Think about what active components do.

4. 4.

   True or False: Common source amplifiers typically provide voltage gains higher than common emitter amplifiers.

   • True
   • False

   Hint

   Recall the typical gain values discussed.

5. 5.

   Design a common emitter amplifier with a target voltage gain of 150 using an active load. Determine the necessary values for input current and load resistance.

   Hint

   Consider the transistor's parameters and ensure they align with the desired gain.

6. 6.

   Analyze a common source amplifier with an active load where the quiescent current is 5mA and the maximum output voltage is 10V. What is the maximum obtainable voltage gain if the output voltage swing cannot exceed the supply voltage?

   Hint

   Ensure calculations consider active loading configurations.