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CSatt.1
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August 2, 2021
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Incoherence between LSM6DSL, LSM6DSO and ISM330DHCX datasheets and Application Notes

  • August 2, 2021
  • 1 reply
  • 1264 views

Hello,

I noticed some incoherence between the documentations of the LSM6DSL, LSM6DSO and ISM330DHCX concerning the value of the last 3 ODR of the sensors.

  • LSM6DSL Datasheet : 1666Hz - 3332Hz - 6664Hz
  • LSM6DSL AN5040 : 1666Hz - 3333Hz - 6666Hz
  • LSM6DSO Datasheet : 1666Hz - 3332Hz - 6664Hz
  • LSM6DSO AN5192 : 1667Hz - 3333Hz - 6667Hz
  • ISM330DHCX Datasheet : 1666Hz - 3332Hz - 6667Hz
  • ISM330DHCX AN5398 : 1667Hz - 3333Hz - 6667Hz

Which frequencies should we consider ?

Thank you,

Best regards,

Clotilde

    This topic has been closed for replies.
    Best answer by Eleon BORLINI

    Hi Clotilde @[CSatt.1]​ ,

    you are right, there is some little variation across the documents.

    However, please note that if you need the exact ODR speed for performing calculations, for example for synchronizing acquisitions or using raw data to integrate velocities or displacements, you cannot rely only on the online documentation.

    In fact, on datasheets and application notes the typical values are defined, and if there is discrepancy among them, the datasheet declared value must be preferred. Moreover, and most important, the true ODR can vary also of some percentage points from the nominal value (1%/2&), and must be measured case by case, for example exploiting the DRDY (data-ready) interrupt and measuring the rate.

    If my reply answered your question, please click on Select as Best at the bottom of this post. This will help other users with the same issue to find the answer faster.

    -Eleon

    1 reply

    E
    Eleon BORLINIAnswer
    ST Employee
    August 4, 2021

    Hi Clotilde @[CSatt.1]​ ,

    you are right, there is some little variation across the documents.

    However, please note that if you need the exact ODR speed for performing calculations, for example for synchronizing acquisitions or using raw data to integrate velocities or displacements, you cannot rely only on the online documentation.

    In fact, on datasheets and application notes the typical values are defined, and if there is discrepancy among them, the datasheet declared value must be preferred. Moreover, and most important, the true ODR can vary also of some percentage points from the nominal value (1%/2&), and must be measured case by case, for example exploiting the DRDY (data-ready) interrupt and measuring the rate.

    If my reply answered your question, please click on Select as Best at the bottom of this post. This will help other users with the same issue to find the answer faster.

    -Eleon

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