ACCELEROMETER 3-AXIS SPI/I2C SMD

BMA120

Manufacturer Part NumberBMA120
DescriptionACCELEROMETER 3-AXIS SPI/I2C SMD
ManufacturerBosch Sensortec
BMA120 datasheet
 


Specifications of BMA120

AxisX, Y, ZAcceleration Range±2g, 4g, 8g, 16g
Sensitivity16LSB/g, 8LSB/g, 4LSB/g, 2LSB/gVoltage - Supply1.62 V ~ 1.98 V
Output TypeDigitalBandwidth50Hz ~ 1kHz Selectable
InterfaceI²C, SPIMounting TypeSurface Mount
Package / Case12-LGALead Free Status / RoHS StatusLead free / RoHS Compliant
Other names0 273 141 070
828-1015-2
  
1
Page 1
2
Page 2
Page 1/2

Download datasheet (2Mb)Embed
Next
BMA120
Digital, triaxial acceleration sensor
Bosch Sensortec
General description
The BMA120 is a triaxial, low-g acceleration sensor
with digital interfaces, aiming for low-power consumer
market applications.
The BMA120 allows measurement of accelerations in
3 perpendicular axes. An evaluation circuitry converts
the output of a three-channel micromechanical accele-
ration sensing structure that works according to the
differential capacitance principle.
The BMA120 senses tilt, motion, shock and vibration
in cell phones, handhelds, computer peripherals,
man-machine interfaces, virtual reality features and
game controllers.
BMA120 target applications
Display profi le switching (e.g. portrait / landscape)
Tap / Double-tap function
Menu scrolling
Gaming
Advanced power management for mobile devices
Drop protection for warranty logging
Shock detection
Pedometer / step counting
Sensor operation
The BMA120 represents a new generation of digital
acceleration sensors. The BMA120 integrates a multi-
tude of features that facilitates its use especially in
the area of motion detection applications, such as
device orientation detection, gaming, HMI and menu
browser control.
Key features BMA120
User programmable g-range and bandwidth
Low-power consumption
SPI (3-wire / 4-wire) and I²C interface
User programmable interrupt engine
Ultra-low-power self-wake-up mode
Very small package
RoHS compliant, halogen-free
The BMA 120 is highly confi gurable in order to give
the designer full fl exibility when integrating the sensor
into his system. All features can be set by software via
the digital interface.
As already introduced with the successful BMA150
and SMB380 acceleration sensors, also for the
BMA120 g-ranges and bandwidths can be user pro-
grammed via the serial digital interface. Here the user
can choose between an I
2
C and an SPI (3-wire/4-wire)
interface modes.
One of the key elements of the BMA120 is the intelli-
gent interrupt engine that gives the hard- and software
designer full control. Various motion detection scena-
rios can be identifi ed by the BMA120 and signaled to
the system via a simple interrupt pin. By using the
digital serial interface, the exact details of the motion
event that triggered the interrupt can be read-out from
the BMA120.
Technical data
BMA120
Sensitivity axes
Measurement range
±2g, ±4g, ±8g, ±16g
(switchable via SPI / I²C)
Sensitivity
(calibrated)
Resolution
6bit
62.5mg (±2g range)
Nonlinearity
Zero-g offset
Bandwidth
50Hz, 75Hz, 150Hz,
250Hz, 600Hz, 1kHz
(switchable via SPI / I²C)
Digital input/output
SPI & I²C, interrupt pin
Supply voltage
(V
/ V
)
DD
DDIO
Temperature range
LGA package
3 mm x 3 mm x 0.9 mm
x/y/z
2g: 16LSB/g
4g:
8LSB/g
8g:
4LSB/g
16g:
2LSB/g
±2% FS
±100 mg (typ.)
1.8V (±10%)
-20°C … +70°C

BMA120 Summary of contents

  • Page 1

    ... and an SPI (3-wire/4-wire) interface modes. One of the key elements of the BMA120 is the intelli- gent interrupt engine that gives the hard- and software designer full control. Various motion detection scena- rios can be identifi the BMA120 and signaled to the system via a simple interrupt pin. By using the ...

  • Page 2

    ... SDO The interrupts can be confi gured by the user and thus 7 SC perfectly support the integration of the BMA120 into X the user’s system environment. Another important feature of the BMA120 acceleration sensor is the power management module. This modu- le allows for optimizing the sensor’s power consump- tion in-line with the specifi ...