GENERAL DESCRIPTION
The BMX160 is a very small low power, low noise absolute
orientation sensor designed for use in wearable devices like
smart watches or augmented reality glasses. It comprises a 3-
axis accelerometer, gyroscope and geomagnetic sensor in a
single package. Its current consumption is typically 1580 µA,
enabling always-on applications in battery driven devices. The
BMX160 is available in a compact 14-pin 2.5 x 3.0 x 0.95 mm³
LGA package.
SENSOR FEATURES
Due to the built-in hardware synchronization of the inertial
sensor data and geomagnetic sensor data, the BMX160 is
ideally suited for augmented reality, immersive gaming, and
navigation applications that require highly accurate, low power
and low latency 9-axis sensor data fusion. The BMX160
provides high precision sensor data together with an accurate
time stamp generated by a real-time clock. The BMX160
features an on-chip interrupt engine which provides motion-
based context awareness as always-on background functions.
TECHNICAL SPECIFICATIONS
BMX160 Technical data
Package dimension (mm3)
2.5 x 3.0 x 0.95
Temperature ranges
-40 °C … +85 °C
Supply voltage (VDDIO)
Supply voltage (VDD)
1.2 V … 3.6 V
1.71 V … 3.6 V
Typ. current consumption
Gyro full operation
Gyro + Acc. + Geomag.
Geomag. @full operation
Acc. @full operation
Suspend mode
Significant motion
Step detector
850 µA
1585 µA
660 µA
180 µA
5 µA
30 µA
30 µA
Sensitivity
(A)
±2 g: 16384 LSB/g
±4 g: 8192 LSB/g
±8 g: 4096 LSB/g
±16 g: 2048 LSB/g
(B)
±125 °/s: 262.4 LSB/°/s
±250 °/s: 131 LSB/°/s
±500 °/s: 65.6 LSB/°/s
±1000 °/s: 32.8 LSB/°/s
±2000 °/s: 16.4 LSB/°/s
Device resolution
(M): 0.3 µT
TCS (typ.)
(A): ±0.03 %/K
(M): ±0.01 %/K
(G): ±0.02 %/K
Non-linearity (typ.)
(A): ±0.5 % FS
(G): ±0.1 % FS
(M): ±1 % FSmax
Offset (typ.)
(A): ±40 mg
(G): ±3 °/s
(M): ±40 µT
TCO (typ.)
(A): ±1.0 mg/K
(G): ±0.05 /s/K
Noise density (typ.)
(A): ±180 µg/ √Hz
(M): ±0.3 µT
(G): 0.008 °/s/ √Hz
FIFO size
1024 byte
Bosch Sensortec
BMX160
9-axis Absolute Orientation Sensor
BMX160 TARGET APPLICATIONS
Augmented reality and immersive gaming
3D scanning and indoor mapping
Indoor navigation and pedestrian dead-reckoning, step
counting
Wearable accessories requiring small footprint and high
performance
9-axis sensor fusion, air mouse applications
Optical image stabilization
BMX160 TARGET DEVICES
Smart watches, wearable fitness trackers, augmented
reality glasses
Mobile phones and tablet PCs
Game controllers and smart remote controls
Toys, e.g. quatrocopters
Bosch Sensortec | BMX160
Data & Specification are preliminary and subject to change without notice | | Bosch Sensortec GmbH reserves all
rights 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 symbols are registered trademarks of Robert Bosch GmbH, Germany.
Doc.-Number: BST-BMX160-FL000-02 / Version_1.1_032013
TECHNICAL SPECIFICATIONS
Pin
configuratio
n
Pin
Name
Description
1
SDO
Serial data output in SPI
Address select in I2C mode
2
GND
Ground for digital and analog
3
GND
Ground for digital and analog
4
INT
Interrupt pin1
5
VOUT
Digital I/O supply voltage
(1.2…3.6 V)
6
GNDIO
Ground for I/O
7
GND
Ground for digital & analog
8
VDD
Power supply analog & digital
domain (1.71 – 3.6 V)
9
INT 2
Interrupt pin 2
10
–
Do not connect
11
–
Do not connect
12
CSB
Chip select for SPI mode/
Protocol select pin
13
SCx
SCK: SPI clock
SCL: I2C clock
14
SDX
SDA serial data I/O in I2C
MOSI serial data input in SPI
4W
SISO serial data I/O in SPI
3W
Examples of interrupts that can be issued, in a power efficient
manner, without using extensive software algorithms are: any-or
no-motion detection, tap or double tap sensing, orientation
detection, free-fall or shock events.
The smart built-in power management unit (PMU) can be
configured, for example, to further lower the power consumption
by automatically sending the gyroscope into fast start-up mode
and waking it again based on the any-motion interrupt of the
accelerometer. By allowing the host to sleep longer, the PMU
significantly contributes to power saving on system level.
SYSTEM COMPATABILITY
With a footprint of only 2.5 x 3.0 mm2 and a package height of
only 0.95 mm, the BMX160 can easily be designed into devices
with miniaturized PCBs.
The BMX160 has been designed for always-on, 9-axis
applications in wearable devices such as smart watches and
head mounted devices, mobile phones, tablets, remote controls,
game controllers, and toys such as quatrocopters.
BMX160 is footprint and register compatible to BMI160. This
way it allows easy upgrade from the 6-axes intertial measure-
ment unit to the 9-axes absolute orientation sensor.
The integrated 1024 byte FIFO buffer supports low power
applications and prevents data loss in non-real-time systems.
The intelligent FIFO architecture allows dynamic reallocation of
FIFO space for accelerometer, gyroscope and geomagnetic
sensor. In a typical 9-DoF application – including the geomag-
netic sensor – this is sufficient for approx. 0.5 s. Accel and Gyro
16 bit, Accel 2 g to 16 g range.
The BMX160 is fully Android Marshmallow compliant, and in the
implementation of the Significant Motion and Step Detector
interrupts, each of which consumes less than 30 μA.
The BMX160 offers a wide VDD voltage range from 1.71 V to
3.6 V and a VDDIO range from 1.2 V to 3.6 V, allowing the
BMX160 to be powered at 1.8 V for both VDD and VDDIO.
Headquarters
Bosch Sensortec GmbH
Gerhard-Kindler-Strasse 9
72770 Reutlingen · Germany
Telephone +49 7121 3535 900
Fax +49 7121 3535 909
www.bosch-sensortec.com
Pin out