IIS328DQ datasheet(13/40 Pages) STMICROELECTRONICS

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IIS328DQ

Mechanical and electrical specifications

2.4

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.

Note:

Supply voltage on any pin should never exceed 4.0 V.

2.5

Terminology

2.5.1

Sensitivity

Sensitivity describes the gain of the sensor and can be determined, for example, by

applying a 1 g 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, noting the output

value, rotating the sensor by 180 degrees (pointing to the sky) and noting the output value

again. By doing so, a ±1 g acceleration is applied to the sensor. Subtracting the larger

output value from the smaller one, and dividing the result by 2, leads to the actual sensitivity

of the sensor. This value changes very little over temperature and also over time. The

sensitivity tolerance describes the range of sensitivity of a large population of sensors.

Table 7. Absolute maximum ratings

Symbol

Ratings

Maximum value

Unit

Vdd

Supply voltage

-0.3 to 4

Vdd_IO

I/O pin supply voltage

-0.3 to 4

Vin

Input voltage on any control pin

(CS, SCL/SPC, SDA/SDI/SDO, SDO/SA0)

-0.3 to Vdd_IO +0.3

APOW

Acceleration (any axis, powered, Vdd = 2.5 V)(1)

3000 g for 0.5 ms

10000 g for 0.1 ms

AUNP

Acceleration (any axis, unpowered)(1)

1. Design guarantee; characterization done at 1500 g/0.5 ms, 3000 g/0.3 ms, 10000 g/0.1 ms; tests under

these conditions have passed successfully.

3000 g for 0.5 ms

10000 g for 0.1 ms

TOP

Operating temperature range

-40 to +105

°C

TSTG

Storage temperature range

-40 to +125

°C

ESD

Electrostatic discharge protection

4 (HBM)

1.5 (CDM)

200 (MM)

This device is sensitive to mechanical shock, improper handling can cause

permanent damage to the part.

This device is sensitive to electrostatic discharge (ESD), improper handling can

cause permanent damage to the part.

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