BMP085 DIGITAL PRESSURE SENSOR

Description

Overview

BMP085 is a digital pressure sensor. Its absolute accuracy can reach 0.03hPa and power consumption is extremely low with current of only 1μA when operating in standard mode. BMP085 adopts ultra-thin 8-pin ceramic leadless chip carrier (LCC) package, which can be connected directly with a variety of microprocessors through 12C bus.

In addition to applications in meteorology, pressure sensor is basically used to test altitude. For example, to accurately determine whether someone is going upstairs or downstairs in the course of gait, the horizontal height changes can be indirectly figured out by calculating the air pressure variations between the upstairs and downstairs.

For details about operation modes, please refer to the chip datasheet and DEMO CODE.

Specifications

• Pressure range: 300 – 1100hPa (altitude 9000 m to -500 m)
• Power supply voltage: 1.8V – 3.6V (VDDA); 1.62V – 3.6V (VDDD)
• LCC8 Packaging: ceramic leadless chip carrier package (LCC)
• Dimension: 5.0mmx5.0x1.2mm
• Low power consumption: 5μA in standard mode
• High precision: in low-power mode, the resolution is 0.06hPa (0.5 m); in high linearity mode, the resolution is 0.03hPa (0.25 m)
• With temperature output
• I2C Interface
• Temperature Compensation
• Response time: 7.5ms
• Standby current: 0.1μA
• No external clock circuit
• Lead-free, RoHS compliant

Applications

• GPS precise navigation (dead reckoning, detection of on the bridge or below the bridge, etc.)
• Indoor and outdoor navigation
• Monitoring of leisure, sports and medical health
• Weather forecast
• Vertical speed indicator (rising / sinking speed)
• Fan power control