L3GD20 Datasheet, PDF (14/44 Pages) STMicroelectronics – MEMS motion sensor: three-axis digital output gyroscope

Mechanical and electrical specifications
L3GD20
2.6
2.6.1
2.6.2
Terminology
Sensitivity
An angular rate gyroscope is a device that produces a positive-going digital output for
counter-clockwise rotation around the sensitive axis considered. Sensitivity describes the
gain of the sensor and can be determined by applying a defined angular velocity to it. This
value changes very little over temperature and time.
Zero-rate level
Zero-rate level describes the actual output signal if there is no angular rate present. Zero-
rate level of precise MEMS sensors is, to some extent, a result of stress to the sensor and
therefore zero-rate level can slightly change after mounting the sensor onto a printed circuit
board or after exposing it to extensive mechanical stress. This value changes very little over
temperature and time.
2.7
Soldering information
The LGA package is compliant with the ECOPACK^®, RoHS and “Green” standard.
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.
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Doc ID 022116 Rev 1