BMP085 Barometric Pressure Sensor Breakout Board

Discontinuation Notice: This product has been replaced by the LPS331AP Pressure/Altitude Sensor Carrier with Voltage Regulator.

Overview

This is breakout board for the BMP085 from SparkFun is a high-precision, low-power barometric pressure sensor. The BMP085 offers a measuring range of 30 to 110 kPa with an absolute accuracy of down to 0.1 kPa. It uses piezo-resistive technology for robustness, accuracy and linearity as well as long term stability. This sensor supports a voltage supply between 1.8 and 3.6VDC. It is designed to be connected directly to a microcontroller via an I2C bus.

The breakout board’s pins are spaced 0.1" apart making it easy to use with standard breadboards and 0.1" perfboards. The analog and digital supplies (VDDD and VDDA) of the BMP085 are tied together and broken out to a single pin. The I²C lines are pulled high with 4.7kΩ resistors.

Specifications and Features

• Dimensions: 0.6" × 0.6" (15.24 × 15.24 mm)
• 1.8 to 3.6 V supply voltage
• 30 to 110 kPa pressure range
• 1 Pa pressure resolution of output data
• Digital two wire (I²C) interface
• Factory-calibrated with calibration values stored in EEPROM
• Temperature measurement included

Note: SparkFun calls this product the “Barometric Pressure Sensor – BMP085 Breakout,” SKU: SEN-11282.

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