BMA250 Bosch Sensortec, BMA250 Datasheet - Page 67

3-AXIS ACCELEROMETER DIGITAL I/F

BMA250

Manufacturer Part Number
BMA250
Description
3-AXIS ACCELEROMETER DIGITAL I/F
Manufacturer
Bosch Sensortec
Series
-r
Datasheets

Specifications of BMA250

Featured Product
BMA250 - Digital, Triaxial Acceleration Sensor
Axis
X, Y, Z
Acceleration Range
±2g, 4g, 8g, 16g
Sensitivity
256LSB/g, 128LSB/g, 64LSB/g, 16LSB/g
Voltage - Supply
1.62 V ~ 3.6 V
Output Type
I²C™, SPI™
Bandwidth
8Hz ~ 1kHz
Interface
I²C, SPI
Mounting Type
Surface Mount
Package / Case
12-VQFN
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With
828-1024 - BMA250 DAUGHTERCARD FOR DEV KIT
Other names
828-1023-2

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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:
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
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.
Sensor Orientation
(gravity vector )
± 0g for the X channel
± 0g for the Y channel
+ 1g for the Z channel
Output Signal X
Output Signal Y
Output Signal Z
Figure 24: Orientation of sensing axis
-1g / -256LSB
0g / 0LSB
0g / 0LSB
Page 67 / not for publishing
Data sheet
1g / 256LSB
BMA250
0g / 0LSB
0g / 0LSB
+1g / 256LSB
0g / 0LSB
0g / 0LSB
-1g / -256LSB
0g / 0LSB
0g / 0LSB
1g / 256LSB
0g / 0LSB
0g / 0LSB
upright
Bosch Sensortec
03 March 2011
-1g / -256LSB
0g / 0LSB
0g / 0LSB
upright

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