Other Parts Discussed in Thread: ADS1261
I currently have a very simple two wire setup on the ADS1261 evaluation board. I have 60 Hz noise on my data and I'm guessing it's because of ground loop somewhere. AIN7 is set as an IDAC (50uA) that drives a 10k resistor (R1) across AIN5 and AIN4. I also have a 15k reference resistor (R2) across AIN0 and AIN1. R1 and R2 are in series. I've tried attaching the negative side of R2 to ground and AVSS and also tried powering the board from external power supply. The attached photo is 400 SPS and a PGA gain of 1.