ADuM5230 no output voltage (Viso)

Document created by analog-archivist Employee on Feb 23, 2016
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In a new product we use the driver ADuM5230ARWZ and we have on some devices no
output voltage (Viso).

Ours values of resistors for Vadj are Upper=0ohm and Lower=10kohm, can the
reason be? In datasheet I am not sure that we can use UPPER/LOWER=0/10?
Or have I to check the Vdd1 slew rate or other parameter?

 

If you use 0ohms for the upper resistor, and VDD1 goes above 5V, you could set
the duty cycle for the Viso to zero and shutdown Viso. I would recommend that
you change your resistors to 1K and 9K and see if the Viso is OK. Let me know
your feedback.

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