Is there a replacement for the AD7793 with the same pinout?
May I know what is your application and what is the reason for replacement? I think AD7792 is the pin-pin compatible of AD7793 but with 16bit of data conversion only. You can also check it co-family…
I see I think the above co-generics may suit your needs. Though some of these have higher channel counts that you may find it overkill for your application.