AD5790 Evaluation Board Software and Hardware

Question

Hello, 
 I am currently evaluating AD5790, I noticed that in it's evaluation board there is an extra ADR445BRZ. May I know if there are any other device that uses the same part of the board simultaneously. For it's software, I noticed that the product description has a typographical error, it should show 20-Bit instead of 18-bit. Below are the images of AD5790 Evaluation Board Software and Hardware. 
 
 Thank you, Perryl

EZAdministrator · Accepted Answer

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EZ Admin

ESanz · Answer

Hi Perryl, 
 The idea of connecting two references in parallel was to improve the accuracy (taking into account that the ADR445 specifies 1ppm/°C (typ) tempco), but not very significant results were achieved. 
 Analog Devices do not provide ultra-stable temperature controllable references, which would need to be obtained from another supplier if a 20-bit accuracy is desired. 
 Thanks for letting us know about the typo on the Evaluation Board Software. 
 Regards, 
 Estibaliz

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AD5790 Evaluation Board Software and Hardware