3-AXIS ACCELEROMETER ANALOG I/F

BMA140

Manufacturer Part NumberBMA140
Description3-AXIS ACCELEROMETER ANALOG I/F
ManufacturerBosch Sensortec
BMA140 datasheets
 

Specifications of BMA140

AxisX, Y, ZAcceleration Range±4g
Sensitivity300mV/gVoltage - Supply1.8 V ~ 3.5 V
Output TypeAnalogBandwidth1.5kHz
InterfaceParallelMounting TypeSurface Mount
Package / Case12-LGAFor Use WithDM240021 - KIT STARTER MPLAB FOR PIC24H828-1010 - BMA140 DAUGHTERCARD FOR DEV KIT
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names828-1001-2
1
Page 1
2
Page 2
Page 1/2

Download datasheet (492Kb)Embed
Next
BMA140
Analog, triaxal acceleration sensor
Bosch Sensortec
General description
The BMA140 is an analog, triaxial low-g acceleration
sensor for consumer market applications, available in
a super-flat land-grid array (LGA) package with a very
small footprint of 3mm x 3mm and a height of merely
0.9mm. It allows measurements of static as well as
dynamic accelerations. Due to its three perpendicu-
lar axes it gives the absolute orientation in a gravity
field and enables free-fall detection.
The BMA140 is a two-chip arrangement, which com-
bines an application-specific integrated circuit (ASIC)
with a three-channel silicon accelerometer, to form a
true micro electro mechanical system (MEMS).
Key features BMA140
Triaxial, analog low-g sensor with three
f
parallel outputs
±4g range
f
Ultra low power consumption
f
Power-saving stand-by mode
f
f
Fast wake-up time
Very wide power supply range
f
Additional multiplexed serial analog output
f
f
Internal filtering capability
On-chip gain and offset compensation
f
Self-test capability
f
Super-flat, small footprint LGA package
f
f
RoHS compliant
This concept and the advanced micromachining tech-
nology have proven their robustness and reliability
in more than 150 million Bosch MEMS sensors per
year. The modular ASIC design provides the flexibili-
ty to react quickly to customer needs for additional
sensor functionality in the future.
The BMA140 provides three parallel analog output
signals in a ±4g acceleration range. In addition to the
parallel X, Y and Z output signals there is the option to
multiplex any axis to a single supplementary output
pin in a freely customized manner.
Leveraging its ultra-low power consumption and its
wake-up feature the BMA140 senses tilt, motion,
shock and vibration in advanced gaming console
applications and all kind of mobile, personal com-
munication and entertainment devices.
BMA140 applications based on low-g sensing
Gaming
f
Virtual reality
f
Sports- and life-style wear
f
Handhelds
f
Healthcare
f
f
Cell phones
Navigation
f
Electronic compass compensation
f
Technical data
BMA140
Sensitive axes
Measurement range
Package
LGA, 3 mm x 3 mm x
Sensitivity
(factory trimmed)
Non-linearity
±0.5 % FS (typ.)
Cross axis sensitivity
Zero-g offset
±150 mg (max.)
(factory trimmed)
Zero-g offset tempera-
ture drift
RMS-noise
Bandwidth
(1
order LP filtering)
st
Supply voltage
Current consumption
(typ., normal mode)
Idle current
(max.,stand-by mode)
Wake-up time
Temperature range
-40 °C … +85 °C
x/y/z
±4g
0.9 mm
V
/10 [V/g]
DD
0.2 % (typ.)
±1 mg/K (typ.)
220 μg/√Hz
1.5 kHz
1.8 … 3.5 V
200 μA
0.9 μA
1 msec (typ.)

BMA140 Summary of contents

  • Page 1

    ... BMA140 Analog, triaxal acceleration sensor Bosch Sensortec General description The BMA140 is an analog, triaxial low-g acceleration sensor for consumer market applications, available in a super-flat land-grid array (LGA) package with a very small footprint of 3mm x 3mm and a height of merely 0.9mm. It allows measurements of static as well as dynamic accelerations ...

  • Page 2

    ... The return from stand-by mode to normal mode takes less than 1 millisecond wake up time. The BMA140 is ready to use due to test and calibra- tion at factory level. All calibration parameters, e.g. for offset and sensitivity, are stored in an internal EEPROM ...