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Why is there no filter circuit added to port a and port B of adzs-ad2428mini?

Category: Hardware
Product Number: adzs-ad2428mini?

I compared eval-ad2428wb1bz with adzs-ad2428mini. Many analog circuits are used in port a and port B of the former to process signals, while adzs-ad2428mini has no components. Is there any difference between the two? If you use adzs-ad2428mini as the master node, do you need to add additional circuits to process the signals of port a and port B?