Thank you for your help. A few more questions.
2 Should WCT be tied to ground if it is not used since it is an output? Or left open?
5. If the sampling rate is 2000 Hz, then the lead-off detection signal will be @ 500 Hz and it will be sampled by the ADC, correct? Can this be used to accurately calculate the electrode impedance, since the -3 dB point of the antialiasing filter is at 524 Hz? Will the signal be attenuated?
7. I was thinking about having 4 separate chains of 8 ADS1298 devices, for 32 total ADS1298s. The clock can easily be shared between the 8 local devices, but it is slightly harder to share the same clock among the other chains of 8 devices. So, I imagine that each bank of 8 chained devices will sample at slightly different rates, producing data that is eventually not aligned if they are running in the continuous sampling mode. Is that correct?
Thanks!