Re: AD7190 huge power on settling time

Hi Jonathan,

Thanks for the link to the document about the evaluation board. And sorry for the long time between my responses, but this is sort of a side project of mine, and I’ve been quite busy for the last weeks.

I didn’t use this document before, but of course I read the datasheet as well some general documentation about the grounding of ADCs on your site. And I don’t see any problems with my layout.

But I’m currently reevaluating my test setup. If I use carbon resistors instead of metal film resistors (axial-lead in both cases) for my bridge, I trade settling time for a noisier measured signal.

This behavior raises the question, what (simple) test setup is the most suitable to evaluate the PCB with the chip (and not the test setup itself).

Regards,

Eric