23.8. Summary of Amplifier Models

Try these first

1. 1.

   What does a voltage amplifier primarily do?

   Hint

   Think about what type of signal it focuses on.

2. 2.

   What type of amplifier converts voltage to current?

   Hint

   Remember the 'trans' part relates to conversion.

3. 3.

   What type of amplifier is used to primarily amplify current?

   • Voltage Amplifier
   • Current Amplifier
   • Both

   Hint

   Think about which amplifier type focuses on current.

4. 4.

   True or False: A transimpedance amplifier converts voltage to current.

   • True
   • False

   Hint

   Recall the function of transimpedance amplifiers.

5. 5.

   If a current amplifier has an input current of 5mA and an unloaded gain of 15, calculate the output current.

   Hint

   Apply the gain formula: Output Current = Input Current * Gain.

6. 6.

   Illustrate how to convert a transconductance amplifier's output to match a next stage's voltage input.

   Hint

   Think about Ohm’s Law to establish voltage from current.