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Fermion: BMP390L Digital Barometric Pressure Sensor (Breakout)
A high-precision digital barometric pressure sensor breakout based on the Bosch BMP390L. Designed for industrial-grade applications, it delivers exceptional ...
A high-precision digital barometric pressure sensor breakout based on the Bosch BMP390L. Designed for industrial-grade applications, it delivers exceptional temperature stability, low drift, and ultra-low power consumption — making it ideal for indoor positioning, altitude tracking, and environmental monitoring where GPS signals may not be available.
With an absolute accuracy deviation of less than 50 Pa and relative accuracy of ±3 Pa (equivalent to approximately 25 cm altitude), the BMP390L significantly outperforms its predecessors. Long-term stability drift of only ±16 Pa per year ensures reliable readings over extended deployments. Extended availability is guaranteed up to 10 years.
Key Features
- High Precision – Absolute accuracy <50 Pa, relative accuracy ±3 Pa (~25 cm altitude)
- Excellent Long-Term Stability – ±16 Pa/year drift
- Ultra-Low Power – 54 µA sleep, 357–650 µA in measurement mode
- Low Noise – Less than 0.02 Pa noise impact
- Dual Interface – I2C and SPI communication
- Selectable I2C Address – 0x77 (default) or 0x76 (SDO to GND)
Specifications
- Operating Voltage – 3.3 V
- Pressure Range – 300–1250 hPa
- Relative Accuracy – ±0.03 hPa (700–1100 hPa, 25–40°C)
- Absolute Accuracy – ±0.50 hPa
- Temperature Coefficient – ±0.6 Pa/K (900 hPa, 25–40°C)
- Start-Up Time – 2 ms
- Operating Temperature – −40°C to +85°C (full precision 0–65°C)
- Dimensions – 15 × 20 mm
Ideal For
- Indoor positioning and floor detection
- Drone flight stabilisation and altitude hold
- Water level measurement
- GPS navigation enhancement
- Health care (spirometry)
- AR/VR applications
Package Contents
- 1× BMP390L barometric pressure sensor breakout
- 1× 2.54 mm 7-pin header
- 1× 2.54 mm 4-pin header
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- GPS
- The US satellite navigation system used by GNSS receivers to calculate position and time. Support for GPS is important because it is widely available and often used together with other constellations for more reliable positioning.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- I2C address
- An I2C address is the number a device uses so a microcontroller can tell it apart from other devices on the same I2C bus. It matters because two devices with the same fixed address may conflict if used together.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
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