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Output Voltage not set for AD5732R

Hello,

We have a custom board designed with AD5732RBREZ and require output voltage on Vout1 & Vout2 to be set from 0V to 10V unipolar.

Supply on AVDD = 12V and DVCC =3.3V. SPI communication to the chip is working fine but there is no response from the chip.

I tried to set output range, power up the channel and internal reference voltage but we do not get the REFOUT=2.5V.

Require perfect sequence to set Vout =10V and enable REFOUT voltage. 

Even tried to provide REFIN=2.5V, still Vout=0V @ full count.

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