Subject: Measure voltage ADS1248 I have to measure voltage from across a variable resistor, its not RTD , its resistance varies with change in distance. So equivalent ckt looks like that I have attached. Max resistance will be 1.5K Now I have to measure change in resistance I have used IDAC0 of 50uA which across that resistance of 1.5K total, so give voltage 0 - 75mV. Now I have to use PGA for that but since PGA needs 0.1V away from rails. But I don't want to use bipolar supplies. So what I have done I have connected two fixed resistors of 1.5K each at both ends & vbias = 2.5V at pin AIN1. So voltage across Rx will not be referenced to ground. Am I doing it correct. I haven't tested it. I was thinking if it could be possibility. Or is there any better/right solution for this.