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Bosch Sensortec - Model BMP581 -Barometric Pressure Sensor for Altitude Tracking
The BMP581 sets a new standard in barometric pressure sensors, designed for applications requiring precise altitude measurement. This 24-bit absolute sensor combines high accuracy with a compact design, making it ideal for integration into modern devices like GPS units, wearables, and smart home systems. Its design ensures minimal power consumption and noise, enabling seamless incorporation into a variety of technological environments, from fitness tracking to indoor navigation. The sensor's flexibility allows it to be effectively used in both industrial and commercial products, supporting functions like fall detection and water level monitoring. It significantly enhances design options by providing a unified package easy to implement across a spectrum of devices. Bosch Sensortec's BMP581 is a robust solution for precise altitude tracking, satisfying the demands of both new and existing applications where measurement accuracy is critical.
The BMP581 is the new benchmark in the field of barometric pressure sensors and impresses with its enormous accuracy. This enables endless and new use cases such as fitness tracking where accurate altitude change is key. The low power and low noise 24 bit absolute barometric pressure sensor significantly improved its accuracy compared to previous generations at smallest size. It offers outstanding design flexibility, providing a single package solution that customers can easily integrate into a multitude of existing and upcoming devices such as GPS modules, wearables, hearables, smart home, IoT and industrial products.
- Package dimensions : 2.0 x 2.0 x 0.75 mm³ metal lid LGA
- Operating range (full accuracy) : Pressure: 300 … 1250 hPa
- Supply voltage VDDIO : 1.08 V … 3.6 V
- Supply voltage VDD : 1.65 V … 3.6 V
- Interface : I²C (up to 1.0 MHz), I3C, and SPI (3 and 4 wire, up to 10 MHz)
- Average typical current consumption (1 Hz data rate)
- 1.3 µA @ 1 Hz pressure and temperature, 0.5 µA in deep standby mode
- Absolute accuracy P=300 ...1100 hPa (T=-5 … 65°C) : ±30 Pa
- Relative accuracy Pressure (typ.) P=700…1100 hPa (T=15 … 55°C) : ±6 Pa (equivalent to ±0.5 m) Noise in pressure
- lowest bandwidth, highest resolution : 0.08 Pa
- Temperature coefficient offset (typ.) P=300 hPa ...1100 hPa (T=-5 ... 65°C) : ± 0.5 Pa/K
- Long-term drift (12 months) : ±0.1 hPa
- Solder drift : ±0.3 hPa
- Maximum sampling rate : 480 Hz (continous mode)