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DAC714: Does DAC714 have SPI?

Dukel
Intellectual 610 points

Part Number: DAC714

Hi,

Could anyone take a look at the DAC714. According to the website it should support SPI communication. but when i open the datasheet, I can't find that is does.

Can someone confirm that is should have SPI or or not?

Best regards,

Luc

  • 0
    TI__Genius 14220 points
    Hi Luc,

    Welcome to E2E and thank you for your query. If you look at the timing diagrams on page 4 in the datasheet, you can see that the protocol is SPI where there is a CLK, SDI (MOSI), SDO (MISO), A0 (CS) and A1 (for DAC data latch). I understand your point that it doesn't mention the interface as SPI in the datasheet. However, you can go ahead and implement it.

    Regards,
    Uttam Sahu
    Applications Engineer, Precision DACs
  • 0 in reply to Uttam Sahu
    Intellectual 610 points

    Hi Uttam,

    Thank you for you reply, it took some time to get what the datasheet ment, but also came to the conclusion that it woks with SPI.
    Maybe you can help me with my followup question aswell. Do I need to do any thin with the A1 (DAC data latch) if I don't daisy chain another DAC714 to it, or can I leave it not connected?

    Best regards,

  • 0 in reply to Dukel
    TI__Genius 14220 points
    Hi Luc,

    You need A1 for updating the output. You can leave the SDO unconnected in case you are not using daisy-chain. You can connect A1 to GND if you want to update the DAC with A0 as soon as the SPI frame is complete. With a dynamic A1, you can have synchronous updates independent of jitters in SPI programming.

    Regards,
    Uttam