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DAC37J82: Complex input data

Prodigy 165 points

Replies: 1

Views: 49

Part Number: DAC37J82

Hi,

I would like to know if I can use DAC37J82 with complex input data for both DAC-A and DAC-B with interpolation = 2.
Does it have a IQ to REAL converter for each DAC?
eg: sending I_dacA/Q_dacA & I_dacB/Q_dacB

In the datasheet (table 9), the data frame format for JESD can be seen:
http://prntscr.com/iq12i4
But it's unclear (when interpolation factor > 1),
if a part of I/Q can go to DAC-A, and the other part to DAC-B,
or if 'I' represents real data of DAC-A, and 'Q' real data of DAC-B.


Thanks

  • Guru 67410 points

    User,

    The part does not support sending I and Q data to each DAC. It can do an I/Q to real conversion, but in this case, the Q data from CHB is dropped. See Figure 70 of the data sheet.

    Regards,

    Jim

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