1 Reply Latest reply on Jun 26, 2014 5:12 AM by user_14586677

    DAC to PGA : Will interfacing be a problem?

    user_366036678

       Hello,

         

       

         

      In one of my projects, I wanted to connect a DAC acting as a reference voltage source (Vref) directly to the Vref input of a PGA component.

         

       

         

      I just wanted to know is that is a good idea in terms of interfacing the two components together since I didn't find much about the input resistance of the PGA.

         

       

         

      The VDAC has a 4kOhm typical value for the 1.024V range, so the PGA has to be at least 10 times that to be considerable (I think).