Using AD74412R for the one of the application for 4-20mA current input , will the FET required when using in Current Input configuration that is driven by the CASCODE pin. The application diagram is depicting the FET?
We'll contact the product owner and get back to you on this.
The external FET is optional and can be used to move power dissipation off chip in an output configuration mode.
In your case it is not required and can be omitted.