Hi
I am currently designing a four channel data acquisition board using 4 ADS1282. Three of the channels are connected to low impedance geophones and the last channel is connected to a piezo based hydrophone (very high impedance). The bandwidth of interest is 3-170Hz.
All ADs share the same voltage reference which comprises of one REF5050. To lower the voltage reference noise, I have connected it through a low pass filter consisting of 1k resistor and a 100uF tantal on each AD.
Is this a good Vref solution to get the best performance, lowest noise, out of the ADS1282 or could it be done better?