LIS3DH Single/Double Tap Detection Current Consumption

[Dillah]

Hi,

We notice that LIS3DH accelerometer has multiple mode which can be utilized to be used on low power mode for single/double tap detection.

Does single/double tap detection increase the current consumption stated on the data sheet/design tip?

https://www.st.com/resource/en/datasheet/lis3dh.pdf

https://my.st.com/content/ccc/resource/technical/document/design_tip/group0/d6/1d/5f/b0/3c/6e/47/27/DM00564061/files/DM00564061.pdf/jcr:content/translations/en.DM00564061.pdf

Thank You

[Dillah]

Hi @GGabi.1,

The current consumption are consistent with what it shows in the datasheet.

Our development was limited by current consumption limitation, so i only used the lower ODR rates to keep the current below 5uA on average.

Thank You.

[GGabi.1]

Thanks @Dillah for your fast answer

So, are you telling me that you did successfully the tap detection implementation with an average of current consumption of only 5uA? And it worked well?

I guess that as you cannot set the wake-up interrupt of tap detection in low power mode, then you have needed to use a fixed threshold to wake-up and then change the operative mode of the sensor to active mode, changing the ODR sampling rate. 

Is my assumption correct?

Thanks in advance