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RobH
RobH
Visitor II
October 22, 2020
Solved

Power usage, 400 Hz vs 10 Hz

  • October 22, 2020
  • 1 reply
  • 780 views

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?

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

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

1 reply

Eleon BORLINI
Eleon BORLINIBest answer
ST Employee
October 23, 2020

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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