Data sheet
BMP180
Digital pressure sensor
Bosch Sensortec
BMP180 Data sheet
Document revision 2.3
Document release date 25 May 2011
Document number BST-BMP180-DS000-07
Technical reference code(s) 0 273 300 244
Notes Data in this document are subject to change without notice. Product
photos and pictures are for illustration purposes only and may differ from
the real product’s appearance.
Data sheet
BMP180
Page 2
BST-BMP180-DS000-07 | Revision 2.3 | May 2011 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 subject to change without notice.
BMP180
D
IGITAL PRESSURE SENSOR
Key features
Pressure range: 300 ... 1100hPa (+9000m ... -500m relating to sea level)
Supply voltage: 1.8 ... 3.6V (V
DD
)
1.62V ... 3.6V (V
DDIO
)
Package: LGA package with metal lid
Small footprint: 3.6mm x 3.8mm
Super-flat: 0.93mm height
Low power: 5μA at 1 sample / sec. in standard mode
Low noise: 0.06hPa (0.5m) in ultra low power mode
0.02hPa (0.17m) ultra high resolution mode
- Temperature measurement included
- I
2
C interface
- Fully calibrated
- Pb-free, halogen-free and RoHS compliant,
- MSL 1
New features comparison
BMP180 BMP085
Smaller package height 0.93mm 1.2mm
Faster conversion time (standard mode each) 7.5ms (max.) 7.5ms (max)
Faster I
2
C data transfer max. 3.4MHz max. 3.4MHz
Extended min. supply voltage min. 1.8V min. 1.8V
Lower stand-by current (typ.) 0.1μA 0.1μA
Typical applications
Enhancement of GPS navigation (dead-reckoning, slope detection, etc.)
In- and out-door navigation
Leisure and sports
Weather forecast
Vertical velocity indication (rise/sink speed)
Data sheet
BMP180
Page 3
BST-BMP180-DS000-07 | Revision 2.3 | May 2011 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 subject to change without notice.
BMP180 general description
The BMP180 is the function compatible successor of the BMP085, a new generation of high
precision digital pressure sensors for consumer applications.
The ultra-low power, low voltage electronics of the BMP180 is optimized for use in mobile phones,
PDAs, GPS navigation devices and outdoor equipment. With a low altitude noise of merely 0.25m at
fast conversion time, the BMP180 offers superior performance. The I
2
C interface allows for easy
system integration with a microcontroller.
The BMP180 is based on piezo-resistive technology for EMC robustness, high accuracy and linearity as
well as long term stability.
Robert Bosch is the world market leader for pressure sensors in automotive applications. Based on
the experience of over 400 million pressure sensors in the field, the BMP180 continues a new
generation of micro-machined pressure sensors.
Data sheet
BMP180
Page 4
BST-BMP180-DS000-07 | Revision 2.3 | May 2011 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 subject to change without notice.
Index of Contents
1. ELECTRICAL CHARACTERISTICS............................................................................................... 6
2. ABSOLUTE MAXIMUM RATINGS ................................................................................................. 8
3. OPERATION ................................................................................................................................... 9
3.1 GENERAL DESCRIPTION ................................................................................................................ 9
3.2 GENERAL FUNCTION AND APPLICATION SCHEMATICS...................................................................... 9
3.3 MEASUREMENT OF PRESSURE AND TEMPERATURE ...................................................................... 11
3.3.1 Hardware pressure sampling accuracy modes ..................................................................12
3.3.2 Software pressure sampling accuracy modes....................................................................13
3.4 CALIBRATION COEFFICIENTS ....................................................................................................... 13
3.5 CALCULATING PRESSURE AND TEMPERATURE ............................................................................. 14
3.6 CALCULATING ABSOLUTE ALTITUDE ............................................................................................. 16
3.7 CALCULATING PRESSURE AT SEA LEVEL ...................................................................................... 17
4. GLOBAL MEMORY MAP ............................................................................................................. 18
5. I
2
C INTERFACE ............................................................................................................................ 19
5.1 I
2
C SPECIFICATION ..................................................................................................................... 19
5.2 DEVICE AND REGISTER ADDRESS ................................................................................................ 20
5.3 I
2
C PROTOCOL ........................................................................................................................... 20
5.4 START TEMPERATURE AND PRESSURE MEASUREMENT................................................................. 21
5.5 READ A/D CONVERSION RESULT OR E
2
PROM DATA .................................................................... 22
6. PACKAGE..................................................................................................................................... 23
6.1 PIN CONFIGURATION................................................................................................................... 23
6.2 OUTLINE DIMENSIONS................................................................................................................. 24
6.2.1 Bottom view........................................................................................................................24
6.2.2 Top view .............................................................................................................................25
6.2.3 Side view ............................................................................................................................25
6.3 MOISTURE SENSITIVITY LEVEL AND SOLDERING............................................................................ 26
6.4 ROHS COMPLIANCY ................................................................................................................... 26
6.5 MOUNTING AND ASSEMBLY RECOMMENDATIONS .......................................................................... 26
Data sheet
BMP180
Page 5
BST-BMP180-DS000-07 | Revision 2.3 | May 2011 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 subject to change without notice.
7. LEGAL DISCLAIMER ................................................................................................................... 27
7.1 ENGINEERING SAMPLES.............................................................................................................. 27
7.2 PRODUCT USE............................................................................................................................ 27
7.3 APPLICATION EXAMPLES AND HINTS ............................................................................................ 27
8. DOCUMENT HISTORY AND MODIFICATION............................................................................. 28