ADI on how to achieve 7.5 digits accuracy

[iMo]

Part 1 and 2 from July 2024..

https://www.analog.com/en/resources/technical-articles/achieve-7-pt-5-digits-accuracy-instrumentation-apps-part1.html

https://www.analog.com/en/resources/technical-articles/achieve-7-pt-5-digits-accuracy-instrumentation-apps-part2.html

[RoGeorge]

Nice exercise of selecting the parts for a 7.5 digits.  It is not clear to me if the design was put in practice.  The block diagram shows the generic picture of two ADI evaluation boards (all disconnected). 

What exactly was measured in part 2, the eval board?


P.S.  I'm halfway reading through the article linked in the bibliography, and enjoyed that a lot so far.  Good bird-eye view and interesting insights, thank you. 
https://www.analog.com/en/resources/analog-dialogue/articles/can-you-really-get-ppm-accuracies-from-opamps.html (by Barry Harvey)

[MasterT]

https://www.eevblog.com/forum/metrology/adi-shows-how-to-achieve-7-5-digit-accuracy-in-instrumentation-applications/

[iMo]

  On the other hand repetitio est mater studiorum..