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How to fix output value after come back power down state on AD9747?

Question asked by sofy Employee on Mar 25, 2014
Latest reply on Apr 4, 2014 by sofy

Hello,

About AD9747,

As you know AD9747 goes to power down state and output gose ZERO when RESET and SDO pin are set high also clock supply stop.

Then toggle RESET to low (but still not put clock signal), after several micro seconds later, DAC wake up and analog output become active.

At this time, this analog output is not always same value. It seems output register become undefined.

 

In power down mode, output register value are not keep in previous value?

I would like to know how DAC output always set ZERO after comeback from power down state but before clocking.

 

Thank you for your help in advance.

Regards,

Sofy

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