I am using the AD421 and what i am getting here ia an offset bigger then 0.2% stated at datasheet.
at 4mA i get 3.98mA
and at 20mA i get 19.98mA
I am using an external transistor mode and a small fet mmbfj113, i was wondering why do i get this error.
is that possible the FET i am using?
R2 is not assembled.