Other Parts Discussed in Thread: ISO1044, ISO1042
Hello TI team,
my customer wants to design the circuit with 2 ISO1050s and 1 isoSPI IC.
1 ISO1050 is for communication with external device, another ISO 1050 is for debugging internally. it is used with isoSPI IC.
in this situation, How should I configure GND?
1. make separate GNDs all three output GND of the ICs
2. tie up GNDs of 2 ISO1050s, and make separate GND of isoSPI IC
3. make separate GNDs for 1 ISO1050 (for communicate externally), and tie up GNDs rest of 2 ICs(1 ISO1050 and isoSPI for debugging internally)
4. tie up all 3 output GNDs, but it is separated from main GND obviously.
actually we think no.3 is right.
please check this issue, and give me the right answer. Thanks.
Best regards,
Chase