Overview
The Bosch Sensortec BMP390 is a high-performance, low-power, and low-noise 24-bit absolute barometric pressure sensor. It is designed for a wide range of applications, particularly those requiring precise altitude tracking and indoor navigation. The BMP390 is the successor to the BMP388, offering enhanced performance and accuracy. It is housed in a compact 10-pin metal-lid LGA package with dimensions of 2.0 x 2.0 x 0.75 mm³, making it ideal for integration into battery-driven devices such as smartphones, GPS modules, wearables, hearables, and drones.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Pressure Range | 300 to 1250 | hPa |
| Output Type | Digital | |
| Supply Voltage (VDD) | 1.65 to 3.6 | V |
| Supply Voltage (VDDIO) | 1.2 to 3.6 | V |
| Supply Current at 1 Hz | 3.2 | µA |
| Sleep Current | 1.4 to 1.5 | µA |
| Operating Temperature Range | -40 to +85 | °C |
| Storage Temperature Range | -40 to +85 | °C |
| Relative Accuracy | ± 3 Pa (equiv. to ± 0.25 m) | |
| Absolute Accuracy | ± 50 Pa | |
| Temperature Coefficient Offset | ± 0.6 Pa/K | |
| Maximum Sampling Rate | 200 Hz | |
| Digital Interface | I²C (up to 3.4 MHz), SPI (3 and 4 wire, up to 10 MHz) |
Key Features
- Compact Package: The BMP390 is housed in a 10-pin metal-lid LGA package with dimensions of 2.0 x 2.0 x 0.75 mm³, making it highly suitable for mobile and battery-driven devices.
- Low Power Consumption: It operates with a low power consumption of 3.2 µA at 1 Hz, and 1.4 to 1.5 µA in sleep mode, ideal for battery-powered applications.
- High Accuracy: The sensor offers high relative accuracy of ± 3 Pa (equivalent to ± 0.25 m) and absolute accuracy of ± 50 Pa, along with a temperature coefficient offset of ± 0.6 Pa/K.
- Digital Interface: Supports I²C (up to 3.4 MHz) and SPI (3 and 4 wire, up to 10 MHz) interfaces for flexible communication.
- Power Modes: Operates in sleep, normal, and forced modes to optimize power consumption based on application requirements.
- Built-in IIR Filter: Minimizes short-term disturbances in the output data, enhancing the sensor's stability and accuracy.[
Applications
- Indoor Navigation and Localization: Enhances floor level detection, elevator detection, and emergency call (E-911) accuracy in smartphones and other mobile devices.
- Outdoor Navigation: Improves GPS accuracy, time-to-first-fix, dead-reckoning, and slope detection in various navigation systems.
- Wearables and Hearables: Enhances calorie expenditure measurement and provides accurate altitude tracking in fitness and health-related applications.
- Drones: Supports altitude stabilization and navigation in drones and flying toys.
- Health Care and Fitness: Used in spirometry, context awareness, and other health care and fitness applications.[
- AR & VR Applications: Enhances the accuracy and performance of augmented reality and virtual reality applications.[
Q & A
- What is the pressure measurement range of the BMP390?
The BMP390 measures pressure in the range of 300 hPa to 1250 hPa.
- What are the power consumption characteristics of the BMP390?
The BMP390 consumes 3.2 µA at 1 Hz and 1.4 to 1.5 µA in sleep mode.
- What digital interfaces does the BMP390 support?
The BMP390 supports I²C (up to 3.4 MHz) and SPI (3 and 4 wire, up to 10 MHz) interfaces.
- What are the operating and storage temperature ranges for the BMP390?
The operating and storage temperature ranges are -40°C to +85°C.
- What is the relative accuracy of the BMP390?
The relative accuracy is ± 3 Pa, equivalent to ± 0.25 m.
- Does the BMP390 have built-in filtering capabilities?
Yes, the BMP390 is equipped with a built-in IIR filter to minimize short-term disturbances in the output data.[
- What are the typical applications of the BMP390?
Typical applications include indoor navigation, outdoor navigation, wearables, hearables, drones, and health care devices.[
- How does the BMP390 manage power consumption?
The BMP390 operates in sleep, normal, and forced modes to optimize power consumption based on application requirements.[
- Is the BMP390 compatible with other Bosch sensors?
Yes, the BMP390 is designed to be compatible with other Bosch sensors for integrated solutions.[
- What is the package size of the BMP390?
The BMP390 is housed in a 10-pin metal-lid LGA package with dimensions of 2.0 x 2.0 x 0.75 mm³.[
