Datasheet

LIS2DH Mechanical and electrical specifications
Doc ID 022516 Rev 1 17/49
The turn-on time to change from all operating mode is reported into Table 10.: Turn-on time
for operating mode change.
2.6.4 Self-test
Self-test allows the user to check the sensor functionality without moving it. When the self-
test is enabled an actuation force is applied to the sensor, simulating a definite input
acceleration. In this case the sensor outputs will exhibit a change in their DC levels which
are related to the selected full scale through the device sensitivity. When self-test is
activated, the device output level is given by the algebraic sum of the signals produced by
the acceleration acting on the sensor and by the electrostatic test-force. If the output signals
change within the amplitude specified inside Table 3 , then the sensor is working properly
and the parameters of the interface chip are within the defined specifications.
Table 10. Turn-on time for
operating mode change
Operating mode change
Turn-on Tim
[ms]
12-bit mode to 8 bit mode 1/ODR
12-bit mode to 10 bit mode 1/ODR
10-bit mode to 8 bit mode 1/ODR
10-bit mode to 12 bit mode 7/ODR
8-bit mode to 10 bit mode 1/ODR
8-bit mode to 12 bit mode 7/ODR
Table 11. Operating modes current consumption
Operating mode [Hz]
Low power mode
(8 bit data output)
[μA]
Normal mode
(10 bit data output)
[
μA]
High resolution
(12 bit data output)
[
μA]
1222
10 3 4 4
25 4 6 6
50 6 11 11
100 10 20 20
200 18 38 38
400 36 73 73
1344 -- 185 185
1620 100 -- --
5376 185 -- --