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ADS7830: Internal reference as current source

Zach Holt
Prodigy 10 points
Part Number: ADS7830

Tool/software:

What is the sourcing current capacity of the 2.5V internal reference? I would like to power a few voltage dividers to measure NTC thermistors with the reference, but saw no information in the datasheet about using the reference as a source.

  • +1
    TI__Guru**** 180931 points

    Hi Zach,

    Welcome to our e2e forum!  Generally speaking, the internal reference is not meant to directly drive external circuitry.  That being said, you could use a unity gain buffer (voltage follower) to use the ADS7830 reference to power your voltage dividers.