54.3.4. Gain Calculation for Common Base

Try these first

1. 1.

   What does voltage swing refer to in an amplifier?

   Hint

   Think about how much the output can fluctuate.

2. 2.

   Define input impedance in your own words.

   Hint

   Consider what an impedance represents.

3. 3.

   What is the maximum output voltage swing an amplifier with a 12V supply can realistically achieve?

   • ±6V
   • ±4V
   • ±12V

   Hint

   Remember how the power supply limits influence output.

4. 4.

   True or False: The input impedance is irrelevant in common base amplifier design.

   • True
   • False

   Hint

   Think about how signal integrity relies on impedance matching.

5. 5.

   Given a supply voltage of 15V, design a common base amplifier that can achieve an output swing of ±6V with an input impedance of 300Ω. Explain your calculations.

   Hint

   Always consider the operational zones of the transistors!

6. 6.

   A common base amplifier yields a voltage gain of 50. If the input voltage is 0.1V, what is the output voltage? Discuss any limitations in achieving this gain.

   Hint

   Reflect on how factors like distortion and saturation can affect real gain performance.