Hi, I do not have the list of edits that are queued up for the next rev of the ADC32Rf45 datasheet. I do know that the datasheet for the lower speed grade ADC32RF44 was released three months later and that some of the edits were incorporated into that datasheet. So whenever I am unsure of something I usually make a quick check of the RF44 datasheet. For example, table 16 had a typo in the entry for decimation by 24 case in the RF45 datasheet that was fixed in the RF44 datasheet. Are you using the latest SPI GUI for the EVM? If you are using the EVM, that is, rather than your own hardware. The reason I ask is that I did fix something in the SPI GUI for setting the Nyquist zone in the version of the SPI GUI that is on the web right now. Also - when you say you are seeing better performance in the Nyquist1 zone compared to the Nyquist2 zone - is that specific to channel rather than channelA? That also may point to a datasheet error in the RF45 datasheet compared to what is in the RF44 datasheet. The RF45 datasheet for the register for the channelB Nyquist zone selection lists address: Main Digital Page Channel B (680001h, M = 1). Whereas in the RF44 datasheet this was corrected to be: Main Digital Page Channel B (680100h, M = 1). The difference being whether page address x4003 or page address x4002 is the location of the channel selection for channel B. For channel A it doesn't matter since the channel selection bit is 0 for channel A anyway. But to set the address bit for channel B it needs to be set in page address x4003 as shown in the RF44 datasheet. So yes, that is another thing that is queued up to be fixed in the RF45 datasheet. Regards, Richard P.
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