66.1.2. Multi-Transistor Amplifiers: Amplifier with Active Load (Part A)

Try these first

1. 1.

   What replaces the passive load in an active load amplifier?

   Hint

   Think about components that provide active behavior.

2. 2.

   Name one type of common amplifier discussed in this section.

   Hint

   Recall the name of the amplifier configuration.

3. 3.

   What component replaces passive loads in active load amplifiers?

   • Resistors
   • Inductors
   • Transistors
   • Capacitors

   Hint

   It’s the component that provides active characteristics.

4. 4.

   True or False: The voltage gain of a common source amplifier with passive load is typically higher than that of a common emitter amplifier.

   • True
   • False

   Hint

   Compare the typical gain values you know.

5. 5.

   Design a high-gain amplifier circuit using active loads. Specify the transistor types used, the configurations, and the expected voltage gains.

   Hint

   Focus on maximizing transconductance and minimizing losses.

6. 6.

   Calculate the maximum theoretical voltage gain for a common source amplifier and explain its significance compared to passive load configurations.

   Hint

   Use the formula for voltage gain in relation to supply limitations.