ADS131A04: Sampling Rate

Danilo,

This device has four independent ADC that each sample at 128ksps,  All four devices will simultaneously convert the results.  So, each second the host will receive 128,000 samples x 4.  This is how all simultaneous sampling devices work. 

The customer probably had some experience with multiplexed devices in the past.  For a four channel 128ksps multiplexed device you would receive 128,000 x 1 samples in 1 second.  So the effective sampling rate for all four channels on a multiplexed device is 128k/4 =  32 ksps.  

Thus, for simultaneous sampled devices (like ADS131A04), you do not need to divide by the number of channels like you do for multiplexed devices.

I hope this helped.