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ADUM315x multiple Isolators

Question asked by kahad704 on Feb 4, 2015
Latest reply on Feb 4, 2015 by MSCantrell

Hello,

 

I am designing a device to collect data from several Sensors. For that purpose I need SPI-isolation.

I found the ADUM315x Series which seemed pretty neat. But my question is, if I can control several (8)

different Isolators from one SPI source.

The design will use one Microcontroller as SPI-Master. But I am afraid that, if I use more than one SPIsolator the MISO channels might interfere with each other, since in the functional diagram it looks like the MISO channel is not disabled when the SS is pulled high. Therefore one SPIsolator may pull MISO high, while another trys to pull it down.

 

I hope I made the problem clear.

Any advice, or did anyone try this before?

 

Greetings
Thomas

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