Thanks to Ian over at Dangerous Prototypes for the heads up on this app note from Maxim: Successful PCB Grounding with Mixed-Signal Chips. Have a good GND plane and return path is critical for high speed or mixed signal layout, but it’s often overlooked, and there is precious little information out there that’s accessible to non-specialists. It’s always nice to see app notes from manufacturers trying to make this somewhat opaque area of interest a bit clearer!
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