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AD5235 not respond

Question asked by agualdron on Oct 19, 2012
Latest reply on Oct 23, 2012 by musach

AD5235 not respond


I'm using the AD5235 in rheostat operation, just to make a variable resistor.

But the resistance between A1 and W1 is always 123k.


When I connected the logic analyser to the SPI wires, I found that SDO is always cero, as shows the image.


The circuit I'm using is the follow:




What I'm doing wrong?

How can I identify if the IC is working fine?