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AD5732: High impedance state of SDO-pin

Question asked by fpaul on Jul 5, 2016
Latest reply on Jul 19, 2016 by msamera

Hello,

 

I am using
the AD5732AREZ DA-converter on an SPI bus with several devices. Unfortunately
it seems that the SDO-pin don’t go to High-Z state.

As in the datasheet the high impedance input leakage current of SDO-pin is specified,
there must be a possibility to switch the pin to this state. I tried to disable
the SDO-Output in control register (SDO disable bit == 1) which prevents the IC
to send data at SDO-Pin, but it don’t seem to be in high impedance state
though.

Any hints?

 

Kind regards,

François PAUL

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