User Manual

Data sheet
BMP085
Page 2
BST-BMP085-DS000-06 | Revision 1.3 | August 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.
BMP085
D
IGITAL PRESSURE SENSOR
Key features
• Pressure range: 300 ... 1100hPa (+9000m ... -500m above sea level)
• Supply voltage: 1.8 ... 3.6V (V
DDA
)
1.62V ... 3.6V (V
DDD
)
• LCC8 package: Robust, ceramic lead-less chip carrier (LCC) package
Small footprint: 5.0mm x 5.0mm
Super-flat: 1.2mm height
• Low power: 5μA at 1 sample / sec. in standard mode
• Low noise: 0.06hPa (0.5m) in ultra low power mode
0.03hPa (0.25m) ultra high resolution mode
down to 0.1m (rms noise) possible
• Temperature measurement included
• I
2
C interface
• Fully calibrated
• Pb-free, halogen-free and RoHS compliant,
• MSL 1
General Description
The BMP085 is the fully pin- and function compatible successor of the SMD500, a new
generation of high precision digital pressure sensors for consumer applications. The universal
C-code SMD500/BMP085 (“BMP085_SMD500_API”) is fully upward compatible to SMD500 and
recognizes automatically the device ID. Customers already working with the SMD500 pressure
sensor are invited to contact Bosch Sensortec as soon as they intend to switch-over to the
BMP085 sensor for getting first-hand support.
The ultra-low power, low voltage electronics of the BMP085 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 BMP085 offers superior performance. The I
2
C
interface allows for easy system integration with a microcontroller.
The BMP085 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 200 million pressure sensors in the field, the BMP085 continues a
new generation of micro-machined pressure sensors.