AD5412 no Vout

AD5412AREZ can not work. My schematic as follow:

  • N.M. is Not Mount
  • Use internal DVCC

Do you recommend about the schematic? 

I used 625kHz SPI to sent data to AD5412 is follow:

  1. write 0x560001 to input shift register
  2. write 0x551001 to input shift register
  3. write 0x010700 to input shift register

But, Vout is always 0V. What's wrong?

 

I measure :

AVcc=13.2V

DVcc=4.66V

REFIN=REFOUT=5.14V

Clear=0V

/Fault=0V

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