Question 1:
Can you name one advantage and one disadvantage for the current mirror circuit with base current compensation?
Advantage:
- Reduce the gain error caused by the finite base currents
Disadvantage:
- Loss in the frequency response of the mirror
Question 2:
Can you name one advantage and one disadvantage for Wilson Current Mirror?
Advantage:
- Eliminate the base current mismatch of the conventional BJT current mirror thereby ensuring that the output current is almost equal to the reference current. It also has a very high output impedance due to the negative feedback.
Disadvantage:
- Minimum allowed input and output voltages are relatively large; drain-source voltages of the two main current mirror transistors are not equal