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REF5045: REF50xx driving capability

Intellectual 2190 points

Replies: 3

Views: 160

Part Number: REF5045

Hi;

In my design, I am using a REF5045 to provide a reference voltage for a INA240 device and a ADS8900B device (connected to ADS8900's REFIN pin). Does REF5045 have enough driving capability to drive both devices at the same time?

Thanks 

Wen Li 

  • Hi Wen,

    Yes, plenty. The total is several uA when the REF50xx can supply up to 10mA.

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    If you are using the TL431, check out the new ATL431LI for improved system performance in a p2p package or a ultra  small X2SON (1mm x 1mm x 0.4mm)

    Check out: Voltage Reference Design Tips For Data Converters a new app note that discusses voltage reference error and how it affects ADCs/DACs

  • In reply to Marcoo Z:

    Hi Marcoo;

    Thanks for the quick response!

    The reason for me to ask is because when we hook up the TINA models to run the simulation. We could not see it working properly in simulation. But if we replace the REF5045 model with a voltage source, then the simulation works fine. Maybe the TINA model is not accurate enough?! 

    Anyway, any other insight will be helpful.

    Wen 

  • In reply to Wen Li:

    Can you provide a TINA simulation i can look at?

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    If you feel your thread is resolved, please selected Answered.

    If you are using the TL431, check out the new ATL431LI for improved system performance in a p2p package or a ultra  small X2SON (1mm x 1mm x 0.4mm)

    Check out: Voltage Reference Design Tips For Data Converters a new app note that discusses voltage reference error and how it affects ADCs/DACs

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