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iCoupler clamp current

Question asked by tchaya on Jan 21, 2017
Latest reply on Feb 8, 2017 by tchaya

I am planning to use the ADUM140E to convert 3.3V GPIO from an FPGA to 5V to interface with digital I/O on a servo drive. The servo drive DIO are active low and use opto-isolators with 50mA max drive. I have a couple of questions about the iCoupler:

  • What is the maximum output drive, source and sink?
  • Are the outputs internally current limited? For instance, if someone accidentally shorts an output pin to 5V while the output is ON, would the part get damaged?

Is there a better iCoupler part to use for this type of application? I don't really need the 150Mbps throughput of the ADUM140E series; my outputs are pretty much DC GPIO.

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