Overview
The BMP388 is a high-precision digital barometric pressure sensor developed by Bosch Sensortec. It is designed for accurate altitude tracking and barometric pressure measurement, making it suitable for a wide range of applications. The sensor is housed in a compact 10-pin metal-lid LGA package with dimensions of 2.0 x 2.0 x 0.75 mm³, ensuring minimal space usage while offering high performance. The BMP388 is known for its low power consumption, low noise, and high precision, making it an ideal choice for battery-driven devices such as mobile phones, GPS modules, and wearables.
Key Specifications
| Parameter | Technical Data |
|---|---|
| Operating Pressure Range | 300 hPa to 1250 hPa |
| Absolute Accuracy (Pressure) | ±0.5 hPa (@900-1100 hPa, 25-40°C) |
| Relative Accuracy (Pressure) | ±0.08 hPa (@900-1100 hPa, 25-40°C) |
| Temperature Absolute Accuracy | ±0.5°C (0-65°C) |
| Temperature Coefficient Offset | ±0.75 Pa/K (-20°C to 65°C @ 700-1100 hPa) |
| Supply Voltage (VDD) | 1.65 V to 3.6 V |
| Supply Voltage (VDDIO) | 1.2 V to 3.6 V |
| Interface | I²C (up to 3.4 MHz) and SPI (3 and 4 wire, up to 10 MHz) |
| Average Current Consumption (1 Hz) | 3.4 µA |
| Maximum Sampling Rate | 200 Hz |
| Operating Temperature Range | -40°C to +85°C |
| Package Dimensions | 10-pin LGA with metal lid, 2.0 x 2.0 x 0.75 mm³ |
Key Features
- High precision barometric pressure and temperature measurement.
- Compact 10-pin metal-lid LGA package with dimensions of 2.0 x 2.0 x 0.75 mm³.
- Low power consumption: 3.4 µA at 1 Hz, 2 µA in sleep mode.
- Supports I²C and SPI interfaces up to 3.4 MHz and 10 MHz respectively.
- Compatible with 3.3V/5V voltage levels.
- Integrated 512 byte FIFO buffer for low power applications and preventing data loss.
- New interrupt functionality for efficient data access and storage.
- Hardware synchronization of pressure sensor data and external devices like acceleration sensors.
- Operates in three power modes: sleep, normal, and forced mode.
Applications
- Vertical velocity indication (e.g., rise/sink speed).
- Internet of Things (IoT) projects.
- Enhancement of GPS navigation (e.g., time-to-first-fix improvement, dead-reckoning, slope detection).
- Indoor navigation and localization (floor detection, elevator detection).
- Outdoor navigation, leisure, and sports applications.
- Weather forecasting.
- Health care applications (e.g., spirometry).
- Fitness applications like enhancement of calorie detection.
- AR & VR applications.
- Context awareness.
- Drones and flying toys.
- Handsets such as mobile phones, tablet PCs, GPS devices.
- Navigation systems.
- Portable health care devices.
- Home weather stations.
- Watches.
- White goods.
Q & A
- What is the operating pressure range of the BMP388 sensor?
The operating pressure range of the BMP388 sensor is from 300 hPa to 1250 hPa.
- What are the typical power consumption values for the BMP388?
The BMP388 consumes 3.4 µA at 1 Hz and 2 µA in sleep mode.
- What interfaces does the BMP388 support?
The BMP388 supports both I²C (up to 3.4 MHz) and SPI (3 and 4 wire, up to 10 MHz) interfaces.
- What is the package size of the BMP388?
The BMP388 is housed in a 10-pin metal-lid LGA package with dimensions of 2.0 x 2.0 x 0.75 mm³.
- What are the typical absolute and relative accuracy values for the BMP388?
The BMP388 has a typical absolute accuracy of ±0.5 hPa and a relative accuracy of ±0.08 hPa (@900-1100 hPa, 25-40°C).
- What are the power modes available for the BMP388?
The BMP388 can operate in three power modes: sleep mode, normal mode, and forced mode.
- Does the BMP388 support FIFO functionality?
Yes, the BMP388 includes a 512 byte FIFO buffer to support low power applications and prevent data loss.
- What is the maximum sampling rate of the BMP388?
The maximum sampling rate of the BMP388 is 200 Hz.
- Is the BMP388 compatible with other Bosch sensors?
Yes, the BMP388 is compatible with other Bosch sensors such as the BMI088 for better performance, robustness, and stability.
- What are some common applications of the BMP388?
The BMP388 is commonly used in drones, GPS navigation, indoor and outdoor navigation, health care, fitness applications, and more.
