LSM303C datasheet(11/53 Pages) STMICROELECTRONICS

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DocID024975 Rev 2

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LSM303C

Module specifications

2.1

Sensor characteristics

@ Vdd = 2.5 V, T = 25 °C unless otherwise noted (a).

a. The product is factory calibrated at 2.5 V. The operational power supply range is from 1.9 V to 3.6 V.

Table 3. Sensor characteristics

Symbol

Parameter

Test conditions

Min. Typ.(1) Max.

Unit

LA_FS

Linear acceleration

measurement range(2)

±2

±4

±8

M_FS

Magnetic measurement range

±16

gauss

LA_So

Linear acceleration sensitivity

Linear acceleration FS = ±2 g

0.061

mg/LSB

Linear acceleration FS = ±4 g

0.122

Linear acceleration FS = ±8 g

0.244

M_GN

Magnetic sensitivity

Magnetic FS = ±16 gauss

0.58

mgauss/

LSB

LA_TCSo

Linear acceleration sensitivity

change vs. temperature

0.01

%/°C

LA_TyOff

Typical zero-g level offset

accuracy(3),(4)

±40

M_TyOff

Typical zero-gauss level offset

accuracy

±1

gauss

LA_TCOff Zero-g level change vs. temp. Max. delta from 25 °C

±0.5

mg/°C

LA_An

Linear acceleration RMS noise

ODR = 100 Hz, BW = 50 Hz,

FS = ±2 g

(RMS)

M_R

Magnetic RMS noise

Ultra-high-performance mode

3.5

mgauss

(RMS)

Magnetic disturbance field

Zero-gauss offset starts to degrade

gauss

LA_ST

Linear acceleration self-test

positive difference(5)

1500

M_ST

Magnetic self-test(6)

X, Y-axis

-1

-3

gauss

Z-axis

-0.1

-1

Top

Operating temperature range

-40

+85

°C

1. Typical specifications are not guaranteed.

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

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

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

5. Accelerometer “Self-test positive difference” is defined as: OUTPUT[mg](CTRL_REG5_A ST2, ST1 bits=01) -

OUTPUT[mg](CTRL_REG5_A ST2, ST1 bits=00).

6. Magnetic “self-test” is defined as: OUTPUT[gauss](CTRL_REG1_M ST bit=1) - OUTPUT[gauss](CTRL_REG1_M ST bit=0).

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