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REF5010: Noise Performance

Mark Philip Felipe
Genius 10820 points

Part Number: REF5010

Hi Team, we are looking for the "voltage noise for each member of the REF50xx family" on the datasheet.

Hoping for your inputs.

Thank you.

Regards,

Mark Felipe

  • 0
    TI__Mastermind 19580 points

    Hi Mark Felipe,

    We specify the low frequency voltage noise in the data sheet.

    This is defined as "Output voltage noise" which is "3uVpp/V". So for 10V, the output low frequency noise is 30uVpp.

  • 0 in reply to Marcoo Z
    Prodigy 40 points

    Hi Marcoo Z,

    Thank you for your answer, but unfortunately I am interrested in the wide-band noise in the reange say 50Hz to 500kHz.

    Do you know if the Pspice model of the REF5010 has a correct representation of the BW noise ?

    Does the model includie the effect of the capacitance connected between the terminal "NR"(pin 5.) and GND ?

    In case that the Pspice-model does provide for a correct simulation of the WB-noise, someone at TI must know what the specifications really are !

    Best regards

    Ole

  • 0 in reply to user3012780
    TI__Mastermind 19580 points

    Hi Ole,

    The REF50 family of spice model has accurate wide band noise. Yes it does include the effect of the capacitor on pin 5.

  • 0 in reply to Marcoo Z
    Prodigy 40 points

    Hi Marcoo,

    Thanks lot for for your answer, it really makes sense !

    However, considering the WB-noise, it is still strange that it is not in the datasheet, but is present in the spice-model.

    This is upside-down the normal situation, where capabilities from the datasheet is omitted i the spice-model !

    I will take a further look at Pspice, and use that possibility to obtain the figures need for my design!

    Thanks for your help.

    Best regards

    Ole.