52.2. Common Base Amplifier

Try these first

1. 1.

   What is the primary function of a common base amplifier?

   Hint

   Consider the name and structure of the amplifier.

2. 2.

   What is a typical current gain for a common base amplifier?

   Hint

   Think about how it compares to other types.

3. 3.

   What defines the input impedance of a common base amplifier?

   • High
   • Low
   • Medium

   Hint

   Consider the functions of input versus output.

4. 4.

   True or False: The common base amplifier typically has a current gain greater than 1.

   • True
   • False

   Hint

   Think about its operating characteristics.

5. 5.

   Design a common base amplifier that can handle an input signal with varying frequency while maintaining low noise levels. What considerations must be made?

   Hint

   Evaluate the overall stability of the amplifier configuration under varying conditions.

6. 6.

   Calculate the overall voltage gain of a common base amplifier given g_m = 2 mS and combined output resistance R_C = 10 kΩ. What factors affect this gain?

   Hint

   Consider all parameters of the amplifier impacting gain.