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REF3312: Load regulation

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Replies: 5

Views: 814

Part Number: REF3312

Hi,

Please tell me the test condition below.

Why is there no current condition in Load regulation condition?

Or what do you mean?

Best Regards,

Yuto Sakai

  • Hi Yuto-san,

    The current condition should be the same as the one below -/+ 5mA but only ay 25C.

    -Marcoo Z

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

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

    Looking for the lowest noise voltage reference? Check out the new REF70  family of products starting with the REF7025 with 0.22 ppm p-p of noise.

    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-san,

    Thank you for your reply.
    For both the 4 items in "load regulation", I understood that the current condition is +/- 5 mA, is it correct?
    Also, does the current condition "+/- 5 mA" refer to the characteristic when it changes from -5 to + 5 mA?

    Best Regards,
    Yuto Sakai
  • In reply to Yuto Sakai:

    Hi Yuto-san,

    Yes, for all 4 items it is +/- 5mA.

    The load regulation does not include the transient characteristic like the ripple, instead it is the final settled value. Section 7 of this document helps explain it better and has visuals.

    -Marcoo Z

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

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

    Looking for the lowest noise voltage reference? Check out the new REF70  family of products starting with the REF7025 with 0.22 ppm p-p of noise.

    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-san,

    Does the current condition "Iout = + / - 5 mA" mean when it fluctuated + 5 mA or -5 mA?
    For example, do you mean fluctuations of 0 mA → 5 mA or 5 mA → 0 mA?

    Best Regards,
    Yuto Sakai
  • In reply to Yuto Sakai:

    Hi Yuto-san,

    It means that between the ranges of +5ma and -5mA any current change will fall under that delta of ppm/mA. So for example in a typical application, the current goes from 0mA to 2mA at 25C the output voltage can change (6ppm/mA) * 2mA = 12ppm typical.

    -Marcoo

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

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

    Looking for the lowest noise voltage reference? Check out the new REF70  family of products starting with the REF7025 with 0.22 ppm p-p of noise.

    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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