Electrodermal Activity reference design

Hello,

Is there a reference schematic for the ADI watch GEN II?

I see this article referencing the use of the AD7689BCBZ to capture electrodermal activity. The resulting data looks exactly like what I want to capture. 

https://www.analog.com/en/technical-articles/design-development-and-evaluation-of-a-system-to-obtain-electrodermal-activity.html

The article has block diagrams, but doesn't give values for the low pass filter or other systems.

Thanks!

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