This buffer was really designed for the OPA1656 which has FET input gates and circa 10pA input bias current and 100mA current output. The OPA1612, while lower distortion, has a BJT input gate and about 1000x higher input bias current and 30mA output current drive.
All of this is to reduce the THD by about 2x less down from 0.000029% to 0.000015% and overall lower noise from about 3mV/sqrt(Hz) to 1nV/sqrt(Hz).
I don’t think it’s worth it for the reduced output current drive.
It will probably work fine though.
All of this is to reduce the THD by about 2x less down from 0.000029% to 0.000015% and overall lower noise from about 3mV/sqrt(Hz) to 1nV/sqrt(Hz).
I don’t think it’s worth it for the reduced output current drive.
It will probably work fine though.
