lallaby
Newbie level 4
Hello,
I am confused about the input impedance of an opamp.
For instance, I know the output noise and refer it back to a source impedance as Vonoise^2=4KTRB*A^2
In order to achieve the optimum noise performance, I have to make the input impedance of this opamp equal to the source impedance I calculated, right?
Actually, I want to know what kind of outside parameters limit the input impedance of an amplifier.
Hoping your response, thank you!
Regards,
Lallaby
I am confused about the input impedance of an opamp.
For instance, I know the output noise and refer it back to a source impedance as Vonoise^2=4KTRB*A^2
In order to achieve the optimum noise performance, I have to make the input impedance of this opamp equal to the source impedance I calculated, right?
Actually, I want to know what kind of outside parameters limit the input impedance of an amplifier.
Hoping your response, thank you!
Regards,
Lallaby