Barometric Pressure Sensor BMP-180

This is a breakout board for the Bosch BMP-180 high-precision, low-power digital barometer. The BMP-180 offers a pressure measuring range of 300 to 1100 hPa with an accuracy down to 0.02 hPa in advanced resolution mode. It’s based on piezo-resistive technology for high accuracy, ruggedness and long term stability. These come factory-calibrated, with the calibration coefficients already stored in ROM. What makes this sensor great is that it is nearly identical to its former rev, the BMP085! This breadboard-friendly board breaks out every pin to a 5-pin 0.1″ pitch header. VCC can be from 1.8 V to 3.6 V and is I/O lines are 5 V tolerant; we typically run it on a clean, regulated 3.3 V supply. The analog and digital supplies (VDDD and VDDA) are tied to a single header pin, but are separately decoupled. It connects to a micro controller via I²C bus (also known as TWI, or on the Arduino, the “Wire” library).

FEATURES

• Can measure temperature and altitude.
• Pressure range: 300 to 1100 hPa
• Can work on low voltages
• 3.4 Mhz I2C interface
• Low power consumption (3 uA)
• Pressure conversion time: 5 sec
• Potable size

SPECIFICATION

• Operating  voltage: 1.3 V – 3.6 V
• Input voltage: 3.3 V to 5.5 V
• Peak current : 1000 uA
• Consumes 0.1 uA standby
• Maximum voltage at SDA , SCL : VCC + 0.3 V
• Operating temperature: -40°C to +80°C
• VCC: Connected to +5 V
• GND: Connected to ground.
• SDA: Serial Data pin (I2C interface)
• SCL: Serial Clock pin (I2C interface)
• 3.3 V: If +5 V is not present. Can power module by connecting +3.3 V to this pin.
• Additional information
• Gross weight: 11 g
• Manufacturer part number: BMP-180