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REF6133: REF6133 - interpreting noise data

Intellectual 835 points

Replies: 1

Views: 125

Part Number: REF6133

Hi Team,

my customer is asking following questions about REF6133 noise data:

- Low Integrated Noise is listed as uVpp/V. Usually it is given as uVpp only or nV/Sqrt(Hz)

- for comparison, at REF3133 the 1/f noise is listed as uVpp

Can you please clarify/confirm?

Thanks!

Regards

Andreas

  • Hi Andreas,

    1/f noise scales with output voltage. The 3uVpp/V 1/f noise spec will scale with the output voltage of the REF6133. So 3.3V * 3uVpp/V = 9.9uVpp
    On the REF3133, the noise is already given to the appropriate scaled output voltage.

    -Marcoo Z

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    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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