AD5696R datasheet error and question about Update DAC command

Hi,

I'm writing software to interface with this DAC and have a couple of questions:

  1. The datasheet, rev D, on page 19 and 20 lays out the Input Shift Register Contents for the three products in the family.  Can someone confirm that the labels for figure 47 and figure 49 have been transposed.  It doesn't make sense otherwise.
  2. When issuing command 0010 Update DAC Register n with Contents of Input Register n (datasheet, page 20), I think that the DAC Data Bytes (high and low) are "don't care" as the actual values will be taken from the relevant input register.  

Thanks,

Andrew

  • Hi Andrew, 

    The datasheet, rev D, on page 19 and 20 lays out the Input Shift Register Contents for the three products in the family.  Can someone confirm that the labels for figure 47 and figure 49 have been transposed.  It doesn't make sense otherwise.

    Your statement is correct. This will be updated on the next datasheet revision. 

    When issuing command 0010 Update DAC Register n with Contents of Input Register n (datasheet, page 20), I think that the DAC Data Bytes (high and low) are "don't care" as the actual values will be taken from the relevant input register.  

    This is also correct. This feature works like a software LDAC that loads the input register contents to the DAC register. 

    Best regards,

    Ian