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DAC8775: invalid data

Lillian Liu(SH)
Expert 4620 points
Part Number: DAC8775

Hi team,

We used DAC8775. For /LDC signal, we use it in Synchronous Mode now.

 

DAC8775 Datasheet said, if certain delay “SYNC rising edge->LDAC falling edge” 33ns is not met, invalid data will be loaded. How about the invalid data?

Because we found that /LDAC signal may be corrupted in some EMC case, does it mean that will affect the output of DAC?

Thanks

Lillian

  • 0
    TI__Genius 10400 points

    Hi Lillian,

    Yes, if the LDAC pin goes low before this 33ns timing requirement is met, invalid data can be loaded into the DAC registers. If the LDAC signal is brought low a long time after this 33ns, the DAC output should be what you expect. Let me know if you need any other clarifications.

    Thanks
    Erin