3-AXIS ACCELEROMETER DIGITAL I/F

BMA250

Manufacturer Part NumberBMA250
Description3-AXIS ACCELEROMETER DIGITAL I/F
ManufacturerBosch Sensortec
Series-
BMA250 datasheets
 


Specifications of BMA250

Featured ProductBMA250 - Digital, Triaxial Acceleration SensorAxisX, Y, Z
Acceleration Range±2g, 4g, 8g, 16gSensitivity256LSB/g, 128LSB/g, 64LSB/g, 16LSB/g
Voltage - Supply1.62 V ~ 3.6 VOutput TypeI²C™, SPI™
Bandwidth8Hz ~ 1kHzInterfaceI²C, SPI
Mounting TypeSurface MountPackage / Case12-VQFN
Lead Free Status / Rohs StatusLead free / RoHS CompliantFor Use With828-1024 - BMA250 DAUGHTERCARD FOR DEV KIT
Other names828-1023-2  
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Page 67/74

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8.2 Sensing axes orientation
If the sensor is accelerated in the indicated directions, the corresponding channel will deliver a
positive acceleration signal (dynamic acceleration). If the sensor is at rest and the force of
gravity is acting along the indicated directions, the output of the corresponding channel will be
negative (static acceleration).
Example: If the sensor is at rest or at uniform motion in a gravity field according to the figure
given below, the output signals are:
± 0g for the X channel
± 0g for the Y channel
+ 1g for the Z channel
The following table lists all corresponding output signals on X, Y, and Z while the sensor is at
rest or at uniform motion in a gravity field under assumption of a ±2g range setting and a top
down gravity vector as shown above.
Table 76: Output signals depending on sensor orientation
Sensor Orientation
(gravity vector )
Output Signal X
Output Signal Y
Output Signal Z
Rev. 1.0
© Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such
as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.
Note: Specifications within this document are subject to change without notice.
BMA250
Data sheet
Figure 24: Orientation of sensing axis
0g / 0LSB
1g / 256LSB
0g / 0LSB
-1g / -256LSB
0g / 0LSB
+1g / 256LSB
0g / 0LSB
0g / 0LSB
0g / 0LSB
Page 67 / not for publishing
Bosch Sensortec
upright
upright
-1g / -256LSB
0g / 0LSB
0g / 0LSB
0g / 0LSB
0g / 0LSB
0g / 0LSB
0g / 0LSB
1g / 256LSB
-1g / -256LSB
03 March 2011