Part Number: REF5010
I'm using a REF5010 precision reference and a OPA189 op-amp to create a precision current source to excite a bridge in a pressure sensor, please see attached TINA-TI simulation schematic. In the REF5010 data sheet, SBOS471B-APRIL 2010-REVISED JUNE 2015, TI gives detailed design procedures for the reduction of output noise by selecting the proper type and value of capacitors. I would like to do a noise analysis on the circuit but I have not been able to set it up correctly. The application says "You must add an input to the schematic.". I'm not sure how to do this. Has anyone have any experience doing this. I sure could use some help. Thank you.