43.2.2. Common Base and Common Gate for Current Mode Buffer

Try these first

1. 1.

   What is the desired output resistance for voltage mode buffers?

   Hint

   Think about how it affects signal loss.

2. 2.

   What should the input resistance be in current mode buffers?

   Hint

   Consider the need for current to flow through.

3. 3.

   Which configuration is used for voltage mode buffers?

   • Common Base
   • Common Collector
   • Common Gate

   Hint

   It's known for low output resistance.

4. 4.

   True or False: High input resistance is desired in current mode buffers.

   • True
   • False

   Hint

   Think about how current should flow.

5. 5.

   Given a circuit with a common collector configuration, analyze how changing the input capacitance will affect its bandwidth.

   Hint

   Consider the role of capacitance in frequency response.

6. 6.

   Design a current mode amplifier using a common gate configuration. State the expected input and output characteristics.

   Hint

   Refer back to our discussions on resistance standards in current mode.