3.3.3. Voltage Gain Stage

Try these first

1. 1.

   What is the primary function of the voltage gain stage in an op-amp?

   Hint

   Think about why amplification is necessary in circuit design.

2. 2.

   Define the common-source configuration in brief.

   Hint

   Consider the role of source terminal in amplifying signals.

3. 3.

   What is the main purpose of a voltage gain stage?

   • To decrease the output voltage
   • To amplify the output voltage
   • To filter signals

   Hint

   Remember the role of amplification in op-amp function.

4. 4.

   Cascode configuration is used to:

   • True
   • False

   Hint

   Reflect on the benefits of placing two transistors in series.

5. 5.

   Design an operational amplifier circuit using a common-source configuration and calculate its expected voltage gain. What factors could you manipulate to alter the gain?

   Hint

   Look for components that can change the transconductance of your transistors.

6. 6.

   Explain how the cascode configuration affects the bandwidth of an op-amp and its overall performance in high-speed applications.

   Hint

   Think about how high-output impedance interacts with capacitance.