Bosch BMP581 Barometric Pressure Sensor

Bosch BMP581 Barometric Pressure Sensor features a wide 300hPa to 1250hPa measurement range and absolute accuracy of ±30Pa. The BMP581 is optimized for high-performance applications like fitness measurements with ±6Pa. This feature is equivalent to a ±50cm difference in altitude and an offset temperature coefficient (TCO) of 0.5Pa/K. The device’s low power consumption and integrated 512-byte FIFO buffer supports low power applications and prevents data loss in non-real-time systems.

The Bosch BMP581 Barometric Pressure Sensor is housed in a compact 2.0mm x 2.0mm metal-lid Land Grid Array (LGA) package. The small dimensions and low power consumption make the device ideal for battery-driven applications.

Features

300hPa to 1250hPa measurement range (full accuracy)
±30Pa absolute accuracy
±6Pa relative accuracy pressure
1.65V to 3.6V supply voltage (V_DD)
1.2V to 3.6V I/O supply voltage (V_DDIO)
480Hz maximum sampling rate
Interfaces
- I²C up to 3.4MHz
- SPI 3- and 4-wire, up to 10MHz

Average typical current
- 1.3nA @ 1Hz pressure and temperature
- 0.5nA in deep standby mode
0.08Pa noise in pressure lowest bandwidth, highest resolution
±0.5Pa/K temperature coefficient offset
±0.1hPa long term drift (12 months)
0.3hPa solder drift
2.0mm x 2.0mm x 0.75mm metal-lid LGA-10 package