AnsweredAssumed Answered

Problem with ADuM640x, Viso doesn't switch up.

Question asked by PAM on Jun 7, 2012
Latest reply on Jul 26, 2012 by bookevg

Hi,

 

I have a problem with ADuM6401. I use this part to isolate two circuits interfaced by SPI ( SPI works pretty fine ).

 

I switch Vdd1 ON and OFF and sometimes, in some boards, Viso does not switch up to 5V.

( Vdd, Vsel are well connected, Iiso=15-20mA ).

So I'm confused,...

 

 

Do you have any ideas?

Thank's

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