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ADUM1280CRZ 3 kV RMS Dual Channel Digital Isolators From Analog Devices

Analog Devices – ADUM1280CRZ – Digital Isolator; 18NS; SOIC-8 Datasheet

 

 

How-To safely interface Tx/Rx signal between ASIC board without causing ground loop if multiple power supplies is use.

Connect 12V from supply1 lets say V1
Tx_V1
RX_V1

Connect 12V from supply2 lets say V2
TX_V2
RX_V2

Et voila!

No more ground loop causing EMI noise or degraded signal integrity.

I want to try it on ASICminer Tube PCB board. They solder only 2 pins on my PCB board for TX/RX signals, miss ground or something here.
I suspect they chop the gnd connection between 2 PCBs ( 250W each or 250W / 12V = 20A ). Is the leak gnd point between two high current board.
I need to put a scope to check signals. TX is buffed with a 7407 chip.

They need to discover this chip. SOIC-8 pins
ADUM1280CRZ