Automatically exported from code.google.com/p/bmp085driver
This project is a free initiative to create Arduino driver for BMP085 Digital Barometric Pressure sensor. The main goal is to provide a driver that simplifies the usage of this particular pressure sensor in Arduino projects.
The BMP085 is a high-precision, ultra-low power barometric pressure sensor for use in advanced mobile applications. It offers superior performance with an absolute accuracy of down to 0.03 hPa and using very low power consumption down to 3 µA.
Sensor key Features (from Bosch website):
•Wide barometric pressure range •Flexible supply voltage •Ultra-low power consumption •Low noise measurement •Fully calibrated •Temperature measurement included •Digital two-wire I2C interface •Ultra-flat, small footprint ceramic package
Technical Data:
Pressure range 300 ~ 1100 hPa; RMS noise expressed in pressure 0.06h hPa, typ.(ultra-low power mode) 0.03 hPa, typ.(ultra-high resolution mode);RMS noise expressed in altitude 0.5 m, typ.(ultra-low power mode) 0.25 m, typ.(ultra-high resolution mode); Absolute Accuracy p=7001100hPa (T=0+65°C,VDDA=3.3V Pressure: ±2.5hPa, max. Temperature: ±2°C, max.;Average current consumption (1Hz data refresh rate) 3 µA, typ. (ultra-low power mode) 12 µA, typ. (ultra-high resolution mode);Peak current 600 µA, typ.;Stand-by current 0.1 µA, typ.;Supply voltage VDDD 1.62V ~ 3.6V;Supply voltage VDDA 1.8V ~ 3.6V;Operation temp. range/ full accuracy -40°C ~ +85°C/0°C ~ +65°C;Pressure conversion time 7.5 msec, max.;I2C data transfer rate 3.4 MHz, max.;Package dimensions 5 mm x 5 mm x 1.2mm
BMP085 latest Specifications are available at: http://www.bosch-sensortec.com/content/language1/html/3477.htm