Hello,
My customer has a few questions:
- A DigiKey search shows that the TI digital isolators use the capacitive coupling technology. There are others (e.g. magnetic). Do you know the advantages and disadvantages of capacitive coupling versus magnetic coupling, and why I would chose the TI capacitively-coupled digital isolators as opposed to another technology?
- Based on my understanding of how this works, there is an internally-generated, high-frequency signal that is modulated based on the input logic level (even the edge-based devices have an internal clock). Is there any information within the data sheets or other documentation that identifies what those frequencies are? In our application, we will be dealing with other RF interfaces that need to avoid interference from on-board devices that could cause problems. If the digital isolation devices operate in those frequency bands, we may not be able to use them.
Regards,
David