LIS331DLTR(2007) Ver la hoja de datos (PDF) - STMicroelectronics

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LIS331DLTR
(Rev.:2007)

MEMS motion sensor 3-axis - ±2g/±8g smart digital output “nano” accelerometer

STMicroelectronics 

LIS331DL

Mechanical and electrical specifications

2

Mechanical and electrical specifications

2.1

Mechanical characteristics

Table 2.

Symbol

Mechanical characteristics (1) (2)

Parameter

Test conditions

Min. Typ.(3) Max.

Unit

FS

Measurement range(4)

FS bit set to 0

FS bit set to 1

±2.0

±2.3

g

±8.0

±9.2

So Sensitivity

FS bit set to 0

FS bit set to 1

18

mg/digit

72

TCSO

Sensitivity change vs

temperature

FS bit set to 0

±0.01

%/°C

TyOff

Typical zero-g level offset

accuracy(5),(6)

FS bit set to 0

FS bit set to 1

±40

mg

±60

mg

TCOff

Zero-g level change vs

temperature

Max delta from 25°C

±0.5

mg/°C

FS bit set to 0

STP bit used

X axis

-11

LSb

Vst

Self test output

change(7),(8),(9)

FS bit set to 0

STP bit used

Y axis

11

LSb

BW System bandwidth(10)

FS bit set to 0

STP bit used

Z axis

-11

LSb

ODR/2

Hz

Top Operating temperature range

-40

+85

°C

Wh Product weight

20

mgram

1. All the parameters are specified @ Vdd= 2.5 V, T = 25°C unless otherwise noted

2. The product is factory calibrated at 2.5V. The operational power supply range is from 3.0V to 3.6V.

3. Typical specifications are not guaranteed

4. Verified by wafer level test and measurement of initial offset and sensitivity

5. Typical zero-g level offset value after MSL3 preconditioning

6. Offset can be eliminated by enabling the built-in high pass filter

7. If STM bit is used values change in sign for all axes

8. Self Test output changes with the power supply. Self test “output change” is defined as OUTPUT[LSb](Self-test bit on ctrl_reg1=1)

-OUTPUT[LSb](Self-test bit on ctrl_reg1=0). 1LSb=4.6g/256 at 8bit representation, ±2.3g Full-Scale

9. Output data reach 99% of final value after 3/ODR when enabling Self-Test mode due to device filtering

10. ODR is output data rate. Refer to table 3 for specifications

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