LSM303D Datasheet, PDF (20/52 Pages) STMicroelectronics – Embedded temperature sensor

Application hints
LSM303D
5.3
Digital Interface power supply
This digital interface, dedicated to the linear acceleration and to the magnetic field signal, is
capable of operating with a standard power supply (Vdd) or using a dedicated power supply
(Vdd_IO).
5.4
Soldering information
The LGA package is compliant with ECOPACK^®, RoHS and “Green” standards.
It is qualified for soldering heat resistance according to JEDEC J-STD-020.
Leave “Pin 1 Indicator” unconnected during soldering.
Land pattern and soldering recommendations are available at www.st.com/mems.
5.5
High-current wiring effects
High current in wiring and printed circuit traces can be the cause of errors in magnetic field
measurements for compassing.
Conductor-generated magnetic fields add to the Earth’s magnetic field creating errors in
compass heading computations.
Keep currents higher than 10 mA a few millimeters further away from the sensor IC.
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