Barometric Pressure Sensor IC BME280

BMI270,Combined humidity and pressure sensor

Board Mount Humidity Sensors MEMS humidity, pressure and temperature sensor

> Applications

• Context awareness, e.g. skin detection, room change detection
• Fitness monitoring / well-being
• Warning regarding dryness or high temperatures
• Measurement of volume and air flow
• Home automation control
• control heating, venting, air conditioning (HVAC)
• Internet of things
• GPS enhancement (e.g. time-to-first-fix improvement, dead reckoning, slope detection)
• Indoor navigation (change of floor detection, elevator detection)
• Outdoor navigation, leisure and sports applications
• Weather forecast
• Vertical velocity indication (rise/sink speed)

> Features

Key features
• Package 2.5 mm x 2.5 mm x 0.93 mm metal lid LGA
• Digital interface I²C (up to 3.4MHz) and SPI (3 and 4 wire, up to 10 MHz)
• Supply voltage VDD main supply voltage range: 1.71V to 3.6V VDD IO interface voltage range: 1.2V to 3.6V
• Current consumption 1.8μA @ 1Hz humidity and temperature 2.8 μA @ 1Hz pressure and temperature 3.6 μA @ 1 Hz humidity, pressure and temperature 0.1 μA in sleep mode
• Operating range -40…+85 °C, 0…100 % rel. humidity, 300…1100 hPa
• Humidity sensor and pressure sensor can be independently enabled / disabled
• Register and performance compatible to Bosch Sensortec BMP280 digital pressure sensor
• RoHS compliant, halogen-free, MSL1

> General Description

The BME280 is as combined digital humidity, pressure and temperature sensor based on proven sensing principles. The sensor module is housed in an extremely compact metal-lid LGA package with a footprint of only 2.5 × 2.5 mm² with a height of 0.93 mm. Its small dimensions and its low power consumption allow the implementation in battery driven devices such as handsets, GPS modules or watches. The BME280 is register and performance compatible to the Bosch Sensortec BMP280 digital pressure sensor (see chapter 5.2 for details).
The BME280 achieves high performance in all applications requiring humidity and pressure measurement. These emerging applications of home automation control, in-door navigation, fitness as well as GPS refinement require a high accuracy and a low TCO at the same time.
The humidity sensor provides an extremely fast response time for fast context awareness applications and high overall accuracy over a wide temperature range.
The pressure sensor is an absolute barometric pressure sensor with extremely high accuracy and resolution and drastically lower noise than the Bosch Sensortec BMP180.
The integrated temperature sensor has been optimized for lowest noise and highest resolution. Its output is used for temperature compensation of the pressure and humidity sensors and can also be used for estimation of the ambient temperature.
The sensor provides both SPI and I²C interfaces and can be supplied using 1.71 to 3.6 V for the sensor supply VDD and 1.2 to 3.6 V for the interface supply VDDIO. Measurements can be triggered by the host or performed in regular intervals. When the sensor is disabled, current consumption drops to 0.1 μA.

> Specifications

> Trading Guide

Shipping:

---Delivery period: For in-stock parts, orders are estimated to ship out in 3 days,Once shipped, estimated

   delivery time depends on the below carriers you chose:

» DHL Express, 3-7 business days.
» DHL eCommerce,12-22 business days.
» FedEx International Priority, 3-7 business days
» EMS, 10-15 business days.
» Registered Air Mail, 15-30 business days.

---Shipping rates: After confirming the order, we will evaluate the shipping cost based on the weight of the

    goods.

---Shipping option: We provide DHL, FedEx, EMS, SF Express, and Registered Air Mail international shipping.

---Shipping tracking: We will notify you by email with tracking number once order is shipped.

Returning warranty:

---Returning: Returns are normally accepted when completed within 30 days from date of shipment.Parts

    should be unused and in original packaging. Customer has to take charge for the shipping.

Warranty:

---All Retechip purchases come with a 30day money back return policyThis warranty shall not apply to any

   item where defects have been caused by improper customer assembly, failure by customer to follow

   instructions,product modification, negligent or improper operation.

Ordering:

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