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BP-DAC11001EVM: Onboard Vref (REF6250) VCC Conflict (6V Max vs. DAC 8V Min)

Fedele Tagarelli
Prodigy 10 points
Part Number: BP-DAC11001EVM
Other Parts Discussed in Thread: DAC81001, DAC91001, DAC11001A, REF6250

Tool/software:

The BP-DAC11001EVM User's Guide (SLAU806) indicates that when Jumper J20 is set to position 1-2 (REF_PWR from VCC), VCC should be less than 6V. However, the DAC11001A, DAC91001, DAC81001 datasheet (SLASEL0B) states that the minimum recommended VCC (analog positive power supply) for the DAC chip is 8V. Could you please clarify how the onboard Vref generator (REF6250) is intended to be powered in conjunction with the DAC, given that the DAC's minimum VCC requirement conflicts with the 6V limit specified for the J20 (1-2) jumper option when powering the reference from VCC?

  • 0
    TI__Expert 5000 points

    Hi Fedele,


    You are right, this is a miss from our end and the user's guide will be corrected in next revision. Thanks for pointing it out for us.


    Regarding the power up of the REF6250 - please use the REF_PWR [J18] and REFGND [J19] to power up this part. Operating voltage range for the REF6250 is 5.3V to 5.5V.

    Let me know for any other help if needed.

    Thanks,
    Sanjay