BMP390

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BMP390

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SENSOR 18.13PSIA 10LGA

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Part Status Active
Base Product Number BMP390
Applications Board Mount
Pressure Type Absolute
Operating Pressure 4.35PSI ~ 18.13PSI (30kPa ~ 125kPa)
Output Type I2C, SPI
Accuracy ±0.01PSI (0.05kPa)
Voltage - Supply 1.65V ~ 3.6V
Port Style No Port
Maximum Pressure 290.08PSI (2000kPa)
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package 10-WFLGA
Supplier Device Package 10-LGA (2x2)
Packaging Cut Tape (CT), Tape & Reel (TR)

Tổng quan

Description

The BMP390 is a high-performance barometric pressure sensor developed by Bosch Sensortec. It's designed for applications requiring precise altitude measurement, such as drones, smart home devices, and wearables. The sensor boasts an ultra-high resolution of 0.17 Pa, enabling accurate altitude measurements within a few centimeters. Its compact size and low power consumption make it ideal for battery-powered applications.
The BMP390 operates over a wide pressure range from 300 hPa to 1250 hPa and a temperature range from -40°C to +85°C. It supports digital interfaces (I2C and SPI), ensuring easy integration with various microcontrollers. The sensor's robustness is enhanced by its high resistance to environmental factors like humidity and temperature changes.
To facilitate development, Bosch provides detailed documentation and support. Its accuracy and reliability make it suitable for diverse applications, including navigation, weather forecasting, and fitness tracking. Overall, the BMP390 is a versatile sensor offering advanced features for precise environmental measurement.

Equivalent

The BMP390 is a barometric pressure sensor designed by Bosch. Equivalent products include the BMP280 and BMP388, also from Bosch, which offer similar functionalities with variations in performance specifications. Other alternatives include the LPS22HB from STMicroelectronics, the MPL3115A2 from NXP Semiconductors, and the MS5611 from TE Connectivity. Each of these sensors varies in factors like accuracy, power consumption, and operating pressure range, so selection depends on specific application requirements.

Features

The BMP390 is a digital barometric pressure sensor from Bosch Sensortec, designed primarily for mobile applications where power efficiency, precision, and compact size are crucial. Key features include:
1. High Precision: It offers high relative accuracy of ±0.03 hPa, which translates to an altitude accuracy of ±25 cm, making it ideal for applications like indoor navigation and GPS enhancement.
2. Low Power Consumption: With ultra-low power modes, it is suitable for battery-powered devices.
3. Wide Operating Range: It operates over a pressure range of 300 to 1250 hPa and a temperature range of -40 to +85°C.
4. Compact Size: The sensor is available in a compact 10-pin LGA package, making it suitable for space-constrained applications.
5. Digital Interface: It includes both I2C and SPI interfaces for easy integration with microcontrollers.
6. Robustness: The BMP390 is designed to withstand tough environmental conditions, making it suitable for outdoor applications.
7. Compatibility: It is part of the BMP3xx series, offering compatibility and ease of transition for designs using other sensors in the series.

Pinout

The BMP390 is a barometric pressure sensor from Bosch Sensortec. Typically, it comes in a compact LGA package with 10 pins. Here's a brief overview of its pin functions:
1. VDDIO: Interface voltage supply.
2. VDD: Main power supply for the sensor.
3. GND: Ground.
4. SDA: Serial Data Line for I2C interface.
5. SCL: Serial Clock Line for I2C interface.
6. SDO: Serial Data Output for SPI interface, or I2C address selection.
7. CSB: Chip Select for SPI interface.
8. PS: Interface Selection (I2C or SPI).
9. INT: Interrupt pin used for alerts.
10. GND (or unused/NC): Additional ground pin or Not Connected.
The sensor is used in applications requiring precise altitude and atmospheric pressure measurements, such as in drones, smartphones, and wearables. Its low power consumption and high precision make it suitable for battery-powered devices. The BMP390 offers both I2C and SPI interfaces, providing flexibility in integrating with various microcontrollers.

Manufacturer

The BMP390 is manufactured by Bosch Sensortec, a subsidiary of the Bosch Group. Bosch Sensortec specializes in developing and marketing a wide range of microelectromechanical systems (MEMS) sensors and solutions tailored for consumer electronics. These sensors are widely used in applications such as smartphones, wearables, drones, and other Internet of Things (IoT) devices. Bosch Sensortec is part of the larger Bosch Group, which is a leading global supplier of technology and services, operating in various sectors including mobility solutions, industrial technology, consumer goods, and energy and building technology. Bosch is known for its focus on innovation and quality, with a strong emphasis on research and development.

Application

The BMP390 is a high-precision barometric pressure sensor commonly used in various applications. Key areas include:
1. Consumer Electronics: Enhancing GPS navigation accuracy in smartphones and wearables by providing precise altitude data.
2. Drones and UAVs: Improving flight stability, altitude control, and navigation through accurate pressure readings.
3. Weather Stations: Contributing to accurate weather forecasting by measuring atmospheric pressure changes.
4. Sport and Fitness Devices: Tracking altitude changes for activities like hiking, climbing, or running in fitness trackers and smartwatches.
5. Indoor Navigation: Assisting with floor-level detection in multi-story buildings for emergency response and navigation systems.
These applications benefit from the BMP390's high accuracy, low power consumption, and compact size.

Package

The BMP390 is typically available in a LGA (Land Grid Array) package, which is compact and designed for surface mounting on printed circuit boards. This package type is suitable for integration into various electronic devices where space efficiency is crucial.

Frequently Asked Questions


Q: What is the pressure range of the BMP390?
A: The BMP390 measures absolute pressure from 30kPa to 125kPa (4.35PSI to 18.13PSI).


Q: Is the BMP390 suitable for high-altitude barometric sensing?
A: Yes, its 30kPa to 125kPa range supports altitude measurements from sea level up to approximately 9,000 meters.


Q: Which digital interfaces does the BMP390 support?
A: The BMP390 supports both I2C and SPI output types for flexible microcontroller integration.


Q: What is the typical accuracy of this pressure sensor?
A: It offers high accuracy of ±0.01PSI (±0.05kPa) for precise environmental monitoring.


Q: Can the BMP390 operate on a low-voltage supply?
A: Yes, it operates from 1.65V to 3.6V, making it ideal for battery-powered portable devices.


Q: What is the maximum pressure the sensor can withstand without damage?
A: The maximum rated pressure is 290.08PSI (2000kPa), providing a robust safety margin.


Q: Does the BMP390 require a port for pressure connection?
A: No, it features a "No Port" style, meaning it measures ambient pressure directly via its package opening.


Q: What is the package size of the BMP390?
A: It comes in a 10-WFLGA package with a 2mm x 2mm footprint (10-LGA supplier device package).


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