BMP280 Sensor: Pinout, Application, Circuit and Comparison

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The BMP280 is an absolute barometric pressure sensor, which is especially feasible for mobile applications. Its small dimensions and its low power consumption allow for the implementation in battery-powered devices such as mobile phones, GPS modules or watches.

Bosch Sensortec BMP280 technical specifications, attributes, parameters and parts with similar specifications to Bosch Sensortec BMP280.

●Enhancement of GPS navigation (e.g. time-to-first-fix improvement, dead-reckoning, slope detection)

●Indoor navigation (floor detection, elevator detection)

●Outdoor navigation, leisure and sports applications

●Weather forecast

●Vertical velocity indication (e.g. rise/sink speed)

●Handsets such as mobile phones, tablet PCs, GPS devices

●Navigation systems

●Home weather stations

●Flying toys

●Watches

BMP280 can be operated in three power modes:

• sleep mode

• normal mode

• forced mode

In sleep mode, no measurements are performed. Normal mode comprises automated perpetual cycling between an active measurement period and an inactive standby period. In forced mode, a single measurement is performed. When the measurement is finished, the sensor forced mode, a single measurement is performed. When the measurement is finished, the sensor returns to sleep mode.

The BMP280 provides the highest flexibility to the designer and can be adapted to the requirements regarding accuracy, measurement time and power consumption by selecting from a high number of possible combinations of the sensor settings.

The block diagram of BMP280 is given below.

As the successor to the widely adopted BMP180, the BMP280 delivers high performance in all applications that require precise pressure measurement. The BMP280 operates at lower noise, supports new filter modes and an SPI interface within a footprint 63% smaller than the BMP180. The emerging applications of indoor navigation, fitness as well as GPS refinement require high relative accuracy and a low TCO at the same time.

BMP180 and BMP280 are perfectly suitable for applications like floor detection since both sensors feature excellent relative accuracy is +0.12 hPa, which is equivalent to a +1 m difference in altitude. The very low offset temperature coefficient (TCO) of 1.5 Pa/K translates to a temperature drift of only 12.6 cm/K.

A Simple table for their comparison is shown below.

Bosch Sensortec GmbH is a fully owned subsidiary of Robert Bosch GmbH dedicated to the world of consumer electronics; offering a complete portfolio of micro-electro-mechanical systems (MEMS) based sensors and solutions that enable mobile devices to feel and sense the world around them. Bosch Sensortec develops and markets a broad portfolio of MEMS sensors, solutions and systems for applications in smartphones, tablets, wearable devices, and various products within the IoT (Internet of Things).

Download datasheets and manufacturer documentation for Bosch Sensortec BMP280.