BMA145 Bosch Sensortec, BMA145 Datasheet

3-AXIS ACCELEROMETER ANALOG I/F

BMA145

Manufacturer Part Number
BMA145
Description
3-AXIS ACCELEROMETER ANALOG I/F
Manufacturer
Bosch Sensortec
Datasheets

Specifications of BMA145

Axis
X, Y, Z
Acceleration Range
±4g
Sensitivity
300mV/g
Voltage - Supply
1.8 V ~ 3.5 V
Output Type
Analog
Bandwidth
1.5kHz
Interface
Parallel
Mounting Type
Surface Mount
Package / Case
16-LGA
For Use With
828-1011 - BMA145 DAUGHTERCARD FOR DEV KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
828-1002-2

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
BMA145
Manufacturer:
BOSCH
Quantity:
16 138
BMA145
Analog, triaxal acceleration sensor
Bosch Sensortec
General description
The BMA145 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 4mm x 4mm and a height of merely
0.9mm. It allows measurements of static as well as
dynamic accelerations. Due to its three perpendicular
axes it gives the absolute orientation in a gravity field
and enables free-fall detection.
The BMA145 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).
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 flexibility to
react quickly to customer needs for additional sensor
functionality in the future.
The BMA145 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.
Key features BMA145
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Triaxial, analog low-g sensor with three
parallel outputs
±4g range
Ultra-low power consumption
Power-saving stand-by mode
Fast wake-up time
Very wide power supply range
Additional multiplexed serial analog output
Internal filtering capability
On-chip gain and offset compensation
Self-test capability
Super-flat, small footprint LGA package
RoHS compliant
Leveraging its ultra-low power consumption and its
wake-up feature the BMA145 senses tilt, motion,
shock and vibration in advanced gaming console
applications and all kind of mobile, personal commu-
nication and entertainment devices.
BMA145 applications based on low-g sensing
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Technical data
Sensitive axes
Measurement range
Package
Sensitivity
(factory trimmed)
Non-linearity
Cross axis sensitivity
Zero-g offset
(factory trimmed)
Zero-g offset tempera-
ture drift
RMS-noise
Bandwidth
(1
Supply voltage
Current consumption
Idle current
Wake-up time
Temperature range
Gaming
Virtual reality
Sports- and life-style wear
Handhelds
Healthcare
Cell phones
Navigation
Electronic compass compensation
st
order LP filtering)
BMA145
(max.,stand-by mode)
LGA, 4 mm x 4 mm x
(typ., normal mode)
-40 °C … +85 °C
±0.5 % FS (typ.)
±150 mg (max.)
±1 mg/K (typ.)
1 msec (typ.)
V
0.2 % (typ.)
220 μg/√Hz
1.8 … 3.5 V
DD
/10 [V/g]
0.9 mm
1.5 kHz
200 μA
0.9 μA
x/y/z
±4g

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BMA145 Summary of contents

Page 1

... BMA145 Analog, triaxal acceleration sensor Bosch Sensortec General description The BMA145 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 4mm x 4mm 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 BMA145 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 ...

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