LIS2L02AL

2 Mechanical and Electrical Specifications

CD00068420

7/17

2.3

Absolute maximum ratings

Stresses above those listed as “absolute maximum ratings” may cause permanent damage to

the device. This is a stress rating only and functional operation of the device under these

conditions is not implied. Exposure to maximum rating conditions for extended periods may

affect device reliability.

Table 4.

Absolute maximum ratings

2.4

Terminology

Sensitivity describes the gain of the sensor and can be determined by applying 1g

acceleration to it. As the sensor can measure DC accelerations this can be done easily by

pointing the axis of interest towards the center of the earth, note the output value, rotate the

sensor by 180 degrees (point to the sky) and note the output value again thus applying ±1g

acceleration to the sensor. Subtracting the larger output value from the smaller one and dividing

the result by 2 will give the actual sensitivity of the sensor. This value changes very little over

temperature (see sensitivity change vs. temperature) and also very little over time. The

Sensitivity Tolerance describes the range of Sensitivities of a large population of sensors.

Zero-g level describes the actual output signal if there is no acceleration present. A sensor in a

steady state on a horizontal surface will measure 0g in X axis and 0g in Y axis. The output is

ideally for a 3.3V powered sensor Vdd/2 = 1650mV. A deviation from ideal 0-g level (1650mV in

this case) is called Zero-g offset. Offset of precise MEMS sensors is to some extend a result of

stress to the sensor and therefore the offset can slightly change after mounting the sensor onto

a printed circuit board or exposing it to extensive mechanical stress. Offset changes little over

temperature - see “Zero-g level change vs. temperature” - the Zero-g level of an individual

sensor is very stable over lifetime. The Zero-g level tolerance describes the range of Zero-g

levels of a population of sensors.

Symbol

Ratings

Maximum Value

Unit

Vdd

Supply voltage

-0.3 to 7

V

Vin

Input Voltage on Any Control pin (ST)

-0.3 to Vdd +0.3

V

Acceleration (Any axis, Powered, Vdd=3.3V)

3000g for 0.5 ms

10000g for 0.1 ms

Acceleration (Any axis, Not powered)

3000g for 0.5 ms

10000g for 0.1 ms

Storage Temperature Range

-40 to +125

°C

ESD

Electrostatic Discharge Protection

2kV HBM

200V MM

1500V CDM

This is a Mechanical Shock sensitive device, improper handling can cause

permanent damages to the part

This is an ESD sensitive device, improper handling can cause permanent damages

to the part