4 Replies Latest reply on Oct 17, 2019 4:36 PM by LePo_1062026

    Single ended input reference for SAR set as Differential Inputs

    DaHu_285096

      I have a project with 2 x Differential analog input requirement and 2 x Single ended analog input.

       

      The SAR SEQ component is set up as differential input with internal reference for the differential inputs ok.

       

      What is usually done to set the second input for the single ended measurement? I tried connecting to VSSA ref but the program cmplained about vdac output not connected for some reason.

       

      I don't suppose I could put a couple of Digital LOW components on those pins to reference to ground?

       

      Really don't want to waste 2 IO pins to get ground refs.

       

      Thanks