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Hi,
I was comparing the ADS1672 to the ADS1675 and I noticed that the 72 has a DVdd range of 2.7 3.0 3.3 while the 75 has a DVdd range of 2.85 3.0 3.15. The max operating ranges of the parts are the same, so why is there a difference here? I have a board running at 3.3V and I would like to use the 72 or 75 on this board to cope with part shortages, but have concerns about this difference.
Thanks!
Hello Griffin,
Thank you for your post.
I agree this is confusing. I just compared the ADS1675 data sheet to the ADS1675REF User Guide. It looks like the schematic denotes the DVDD supply net as "+3.3VD", but I believe it is using a 3.0-V supply rail per the explanation in section 3.4.
https://www.ti.com/tool/ADS1675REF
I doubt there is any significant performance difference when operating the digital supply at 3.3 V, however, I cannot make any guarantees that all specifications will remain within range.
Regards,
Ryan