Can you name one advantage and one disadvantage for the current mirror circuit with base current compensation?
- Reduce the gain error caused by the finite base currents
- Loss in the frequency response of the mirror
Can you name one advantage and one disadvantage for Wilson Current Mirror?
- 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.
- Minimum allowed input and output voltages are relatively large; drain-source voltages of the two main current mirror transistors are not equal