DAC to PGA : Will interfacing be a problem? | Cypress Semiconductor
DAC to PGA : Will interfacing be a problem?
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).