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BMX160 Datasheet(HTML) 11 Page - Bosch Sensortec GmbH

Part No. BMX160
Description  Small, low power 9-axis sensor
Download  113 Pages
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Maker  BOSCH [Bosch Sensortec GmbH]
Homepage  https://www.bosch-sensortec.com
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BMX160 Datasheet(HTML) 11 Page - Bosch Sensortec GmbH

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BMX160
Data sheet
Page 11
BST-BMX160-DS000-12 | Revision 1.2 | January 2019
Bosch Sensortec
© 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 preliminary and
subject to change without notice.
OUTPUT SIGNAL GEOMAGNETIC SENSOR
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Device Resolution
Dres,m
TA=25°C
0.3
µT
Gain Error6
Gerr,m
After API compensation
TA=25°C
Nominal VDD supplies
±2
%
Sensitivity
Temperature Drift
TCSm
After API compensation
-40°C ≤ TA ≤ +85°C
Nominal VDD supplies
±0.01
%/K
Zero-B Offset
OFFm
TA=25°C
±40
µT
Zero-B Offset
OFFm,cal
After software calibration with
Bosch Sensortec eCompass
software7
-40°C ≤ TA ≤ +85°C
±2
µT
Magnetometer
Heading
Accuracy8
Acheading
30µT horizontal
geomagnetic field
component, TA=25°C
±2.5
deg
ODR (Output
Data Rate),
Forced Mode9
odrlp
Low power preset
12.5
Hz
odrrg
Regular preset
Hz
odreh
Enhanced regular preset
Hz
odrha
High accuracy preset
Hz
Full-scale
Nonlinearity
NLm, FS
best fit straight line
1
%FS
Output Noise
nrms,lp,m,xy
Low power preset
x, y-axis, TA=25°C
Nominal VDD supplies
1.0
µT
nrms,lp,m,z
Low power preset
z-axis, TA=25°C
Nominal VDD supplies
1.4
µT
nrms,rg,m
Regular preset
TA=25°C
Nominal VDD supplies
0.6
µT
nrms,eh,m
Enhanced regular preset
TA=25°C
Nominal VDD supplies
0.5
µT
6 Definition: gain error = ( (measured field after API compensation) / (applied field) ) - 1
7 Magnetic zero-B offset assuming calibration with Bosch Sensortec sensor fusion software.
Typical value after applying calibration movements containing various device orientations (typical
device usage)
8 The heading accuracy depends on hardware and software. A fully calibrated sensor and ideal
tilt compensation are assumed
9 The geomagnetic sensor is operated in the forced mode. The recommended ODR in this mode
for all presets is 12.5Hz. For more details on according current consumptions and noise figures.
Pls. refer to Table 11 in chapter 2.2.1.2.


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