L3G4200D datasheet(15/42 Pages) STMICROELECTRONICS

15 / 42 page

L3G4200D

Mechanical and electrical characteristics

Doc ID 17116 Rev 3

15/42

2.6

Terminology

2.6.1

Sensitivity

An angular rate gyroscope is a device that produces a positive-going digital output for

counterclockwise 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.

2.6.2

Zero-rate level

Zero-rate level describes the actual output signal if there is no angular rate present. The

zero-rate level of precise MEMS sensors is, to some extent, a result of stress to the sensor

and, therefore, the 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.

2.6.3

Stability over temperature and time

Thanks to the unique single driving mass approach and optimized design, ST gyroscopes

are able to guarantee a perfect match of the MEMS mechanical mass and the ASIC

interface, and deliver unprecedented levels of stability over temperature and time.

With Zero rate level and sensitivity performances, up to ten times better than equivalent

products now available on the market, L3G4200D allows the user to avoid any further

compensation and calibration during production for faster time to market, easy application

implementation, higher performances and cost saving.

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/.

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