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RobH
RobH
Visitor II
Oct 22, 2020 7:45 PM UTC
Solved

Power usage, 400 Hz vs 10 Hz

I'm using the LIS2DH at a 10 Hz sample rate and need to change it to 400 Hz. How will this change power consumption of the device?

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Eleon BORLINI
Eleon BORLINIBest answer
ST Employee
Oct 23, 2020 11:26 AM UTC

Hi @RobH​ ,

you can find the detailed table of the LIS2DH power consumption in the datasheet, p.17:

0693W00000599CiQAI.png 

In your case, depending on your mode, you can have the following power consumption variations:

  • Low power mode --> from 3uA [10Hz] to 36uA [400Hz]
  • Normal mode --> from 4uA [10Hz] to 73uA [400Hz]
  • High resolution mode --> from 4uA [10Hz] to 73uA [400Hz]

Let me please know if it is enough for your scope.

-Eleon

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1 reply

Eleon BORLINI
Eleon BORLINIBest answer
ST Employee
Oct 23, 2020 11:26 AM UTC

Hi @RobH​ ,

you can find the detailed table of the LIS2DH power consumption in the datasheet, p.17:

0693W00000599CiQAI.png 

In your case, depending on your mode, you can have the following power consumption variations:

  • Low power mode --> from 3uA [10Hz] to 36uA [400Hz]
  • Normal mode --> from 4uA [10Hz] to 73uA [400Hz]
  • High resolution mode --> from 4uA [10Hz] to 73uA [400Hz]

Let me please know if it is enough for your scope.

-Eleon

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