I need to isolate (decouple) one CAN bus from another. Can I accomplish this by using two ADM3053 and connecting them back to back? I was thinking that I could connect the digital rx1 to tx2 and rx2 to tx1 and all should work. Sounds too easy. There are COTs CAN bus decouplers, but I would like to integrate this function on my PCB. Please advise on how I can accomplish this.
Yes, it should be possible to implement back to back ADM3053/ADM3053, connecting the logic I/O pins TX and RX together.
As such, you are creating an isolated CAN repeater node.
In a previous post, one customer used ADM3053 + ADM3051 in a similar setup.
See this thread:
Re: How to isolate diffenetial CAN signals (CANH & CANL signals)?