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?