Other Parts Discussed in Thread: REF5025, ADS1278, OPA2376, OPA2320, OPA2350, , INA129-EP, INA129
My analog signal is from a Wheatstone bridge supplied by 10V. I use instrument amplifier to enlarge the signal and set the common voltage as GND. The differential signal is always positive (Vp>Vn). The output of the instrument amplifier is connected to the AINP, with AINN connected to GND. I think whether can I use a resistor divider as a voltage reference input to the ADC, with the divider source by 10V? Because the bridge is supply by the same 10V. The ripple of 10V would create a common noise both on the bridge and the reference voltage and therefore can be automatically removed. Is it better than use a reference device in this case?