Overview
The BMP390L, produced by Bosch Sensortec, is a high-performance, low-power, and low-noise 24-bit absolute barometric pressure sensor. This digital sensor is designed for a wide range of altitude tracking applications and is particularly suited for integration into consumer electronics such as smartphones, GPS modules, wearables, hearables, and drones. The BMP390L offers outstanding design flexibility and an attractive price-performance ratio, making it an ideal choice for mobile applications requiring high precision and low power consumption.
Key Specifications
| Parameter | Technical Data |
|---|---|
| Pressure Range | 300 hPa to 1250 hPa |
| Supply Voltage VDDIO | 1.2 V to 3.6 V |
| Supply Voltage VDD | 1.65 V to 3.6 V |
| Interface | I²C and SPI (3-wire/4-wire) |
| Average Typical Current Consumption (1 Hz data rate) | 3.2 μA @ 1 Hz |
| Absolute Accuracy Pressure (typ.) | ±0.50 hPa (P=300 ...1100 hPa, T=0 ... 65 °C) |
| Relative Accuracy Pressure (typ.) | ±0.06 hPa (P=900…1100 hPa, T=25…40°C), equivalent to ±50 cm |
| Noise in Pressure (Full bandwidth, highest resolution) | 0.03 Pa |
| Temperature Coefficient Offset (25°…40°C @ 900 hPa) | ±0.6 Pa/K |
| Long-term Stability (12 months) | ±0.16 hPa |
| Solder Drift | <±0.8 hPa |
| Maximum Sampling Rate | 200 Hz |
| Package Dimensions | 10-pin LGA with metal lid, 2.0 x 2.0 x 0.75 mm³ |
Key Features
- High-performance 24-bit absolute barometric pressure sensor with low noise and low power consumption.
- Compact 10-pin LGA package with metal lid, measuring 2.0 x 2.0 x 0.75 mm³.
- I²C and SPI (3-wire/4-wire) digital serial interface.
- Three power modes: sleep, normal, and forced mode to optimize power consumption.
- Built-in IIR filter to minimize short-term disturbances in output data.
- Oversampling settings ranging from ultra-low power to highest resolution.
- Interrupt functionality for efficient data access and storage.
Applications
- Indoor navigation and localization, such as floor level detection in smartphones for emergency calls (E-911).
- Enhancing GPS accuracy outdoors for improved navigation and localization.
- Improved accuracy of calorie expenditure measurement in wearables, hearables, and mobile devices.
- Altitude stabilization in drones.
Q & A
- What is the pressure measurement range of the BMP390L? The BMP390L measures pressure in the range of 300 hPa to 1250 hPa.
- What are the supply voltage ranges for the BMP390L? The supply voltage ranges are 1.2 V to 3.6 V for VDDIO and 1.65 V to 3.6 V for VDD.
- What interfaces does the BMP390L support? The BMP390L supports I²C and SPI (3-wire/4-wire) digital serial interfaces.
- What is the typical current consumption of the BMP390L at 1 Hz data rate? The typical current consumption is 3.2 μA @ 1 Hz.
- What is the relative accuracy of the BMP390L in terms of altitude? The relative accuracy is ±0.06 hPa, which is equivalent to ±50 cm difference in altitude.
- What is the maximum sampling rate of the BMP390L? The maximum sampling rate is 200 Hz.
- What are the package dimensions of the BMP390L? The package dimensions are 2.0 x 2.0 x 0.75 mm³ in a 10-pin LGA with metal lid.
- Does the BMP390L have built-in filtering capabilities? Yes, the BMP390L is equipped with a built-in IIR filter to minimize short-term disturbances in the output data.
- What power modes are available for the BMP390L? The BMP390L has sleep, normal, and forced power modes.
- What are some typical applications of the BMP390L? Typical applications include indoor navigation, GPS enhancement, calorie expenditure measurement in wearables, and altitude stabilization in drones.
