63.1. Analog Electronic Circuits

Try these first

1. 1.

   What is a cascode amplifier?

   Hint

   Think about the characteristics it enhances.

2. 2.

   Define operating point.

   Hint

   Consider the context of transistor operation.

3. 3.

   What is the primary function of a cascode amplifier?

   • Increase gain
   • Lower noise
   • Reduce power consumption

   Hint

   Consider what benefits cascode configuration provides.

4. 4.

   True or False: The bandwidth of a cascode amplifier is generally higher than that of a common emitter amplifier.

   • True
   • False

   Hint

   Reflect on the frequency response characteristics.

5. 5.

   Design a cascode amplifier with specified parameters including a 12V supply, transistors with β values of 100 and 200, and couple the load capacitance of 100pF. Calculate the operating point and voltage gain.

   Hint

   Refer to the voltage gain equation you learned: A = -R * g_m.

6. 6.

   You have a cascode amplifier with a known input capacitance of 20pF. Describe its impact on the frequency response compared to one with 125pF input capacitance.

   Hint

   Connect capacitance to the frequency response relationship.