Niels, I did hear back from Dale. He had some communication with the India team that designed this device (the systems engineer is also remote and is at that location). The 500kSPS sampling rate is only for the parallel interface. Additionally, he added some extra comment to the serial interface. The serial interface with DOUTA and DOUTB requires 18x4=72 SCLK cycles, and the total cycle time = 72x50ns+ tCONV+ tD_CNBSY =3.6us+1.24us+15ns =4.855us, so the max sampling rate for serial interface is 206kSPS, which is a little slower than I had mentioned in my previous post. Dale sent an email to the systems engineer and we'll see if we can get the datasheet changed soon. In the mean time, at the bottom of every other page, starting on page 2, there is a clickable link for Submit Documentation Feedback: Can you please click on the link and submit a comment? It may help get the ball rolling faster (and you may get more direct comment from the systems and design team). Joseph Wu
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