BMA250E

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BMA250E

+BOM

ACCEL 2-16G I2C/SPI 12LGA

  • ManufacturerBosch Sensortec

  • Mfr. Part #BMA250E

  • In Stock2454

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Specifications

Attribute Value
PartStatus Obsolete
BaseProductNumber BMA250
Type Digital
Axis X, Y, Z
AccelerationRange ±2g, 4g, 8g, 16g
Sensitivity(LSB/g) 256 (±2g) ~ 16 (±16g)
Bandwidth 8Hz ~ 1kHz
OutputType I2C, SPI
Voltage-Supply 1.62V ~ 3.6V
Features Adjustable Bandwidth, Selectable Scale, Sleep Mode, Temperature Sensor
OperatingTemperature -40°C ~ 85°C
MountingType Surface Mount
Package 12-VFLGA
SupplierDevicePackage 12-LGA (2x2)
Packaging Tape & Reel (TR)

Overview

Description

The BMA250E is a triaxial, low-g acceleration sensor from Bosch Sensortec, designed for measuring acceleration in three perpendicular axes. It is widely used in consumer electronics for motion sensing, offering a compact and cost-effective solution for applications such as smartphones, wearables, gaming devices, and other portable gadgets. The sensor provides high precision and low power consumption, making it suitable for battery-operated devices.
Key features of the BMA250E include a digital interface for easy integration, an internal FIFO buffer for efficient data handling, and various advanced features like configurable g-ranges, selectable bandwidths, and power modes. It also supports tap sensing, orientation detection, and free-fall detection, enhancing user interaction capabilities in devices.
The BMA250E is known for its robust performance in detecting and measuring dynamic and static accelerations, providing reliable data for features such as screen rotation, step counting, and gesture recognition. Its compact size and efficient operation contribute significantly to the development of responsive and interactive user interfaces in modern devices.

Equivalent

The BMA250E is a digital triaxial accelerometer from Bosch Sensortec. Equivalent products include:
1. ADXL345 by Analog Devices – a 3-axis digital accelerometer with similar features.
2. MMA8451Q by NXP Semiconductors – a 3-axis accelerometer with comparable resolution and performance.
3. LIS3DH by STMicroelectronics – another 3-axis accelerometer with digital output.
4. KXTJ3-1057 by Kionix – a competitive low-power accelerometer with similar functionalities.
These products offer comparable performance in terms of sensitivity, power consumption, and interface options.

Features

The BMA250E is a three-axis accelerometer known for its compact size and low power consumption. Key features include:
1. Digital Interface: It communicates via I2C or SPI interfaces, making it versatile for various applications.
2. Low Power Consumption: Ideal for battery-operated devices, it includes multiple power modes to conserve energy.
3. High-Resolution Output: Offers 14-bit resolution, providing precise motion detection and data.
4. Embedded Features: Includes built-in functions like tap sensing, orientation detection, and free-fall detection, reducing the need for external processing.
5. Wide Measurement Range: Capable of handling ranges from ±2g to ±16g, adaptable for different sensitivity requirements.
6. Integrated FIFO Buffer: Helps manage data efficiently, reducing the need for constant processor wakeup.
7. Compact Package: The small footprint of the sensor makes it suitable for space-constrained applications.
8. Temperature Sensor: Includes an integrated temperature sensor for additional environmental data.
These features make the BMA250E suitable for consumer electronics, industrial applications, and wearable devices, offering reliable performance in detecting and analyzing motion.

Pinout

The BMA250E is a digital triaxial accelerometer from Bosch Sensortec. It is designed for low-power and high-performance applications. The BMA250E comes in a 12-pin LGA package. Here’s a brief overview of the pin count and functions:
1. VDDIO: Power supply for interface pins.
2. VDD: Power supply for the sensor core.
3. GND: Ground.
4. SDO: SPI interface data output (also used as I²C address selection).
5. CSB: Chip select for SPI interface.
6. SDA/SDI: Data line for I²C and input for SPI.
7. SCL/SCK: Clock line for I²C and clock for SPI.
8. INT1: Interrupt 1 output.
9. INT2: Interrupt 2 output.
10. NC (Unused pins): Typically, not connected, reserved for future use or internal testing.
The BMA250E is primarily used for motion sensing in mobile phones, gaming devices, and other portable electronics due to its small size, low power consumption, and high precision.

Manufacturer

The BMA250E is manufactured by Bosch Sensortec, which is a subsidiary of Robert Bosch GmbH. Bosch Sensortec specializes in the development and production of microelectromechanical systems (MEMS) sensors. These sensors are widely used in consumer electronics, including smartphones, tablets, wearables, and other connected devices, providing functionalities such as motion detection, orientation sensing, and environmental monitoring.
Robert Bosch GmbH, commonly known as Bosch, is a multinational engineering and technology company headquartered in Germany. Bosch operates across various sectors, including automotive technology, industrial technology, consumer goods, and energy and building technology. It is one of the largest and most established companies in the field of engineering and electronics, renowned for its innovation and quality products. Bosch Sensortec focuses specifically on the consumer electronics market, leveraging the extensive experience and capabilities of its parent company to deliver advanced sensor solutions.

Application

The BMA250E is a digital triaxial accelerometer used in various applications due to its compact size, low power consumption, and high precision. It's commonly used in consumer electronics like smartphones and tablets for motion detection and gesture recognition. In wearable devices, it aids in fitness tracking and health monitoring by detecting movement and orientation changes. The sensor is also utilized in gaming for enhanced user interaction and in automotive systems for navigation and safety applications. Additionally, the BMA250E can be found in industrial applications for vibration monitoring and equipment diagnostics. Its versatility makes it suitable for any application requiring accurate motion detection and analysis.

Package

The BMA250E is an ultra-small triaxial accelerometer from Bosch Sensortec, and it features a compact LGA (Land Grid Array) package. The dimensions of this package are typically around 2.0 mm x 2.0 mm x 0.95 mm, making it suitable for space-constrained applications.

Frequently Asked Questions


Q: What are the selectable acceleration ranges for the BMA250E?
A: The BMA250E supports ±2g, ±4g, ±8g, and ±16g ranges, with corresponding sensitivity from 256 LSB/g to 16 LSB/g.


Q: Does the BMA250E support both I2C and SPI interfaces?
A: Yes, it features both I2C and SPI output types, providing flexible digital communication with a host microcontroller.


Q: What is the supply voltage range for this accelerometer?
A: The operating voltage range is 1.62V to 3.6V, making it suitable for low-power portable and battery-operated designs.


Q: Can the bandwidth be adjusted on the BMA250E?
A: Yes, it offers adjustable bandwidth from 8Hz to 1kHz, allowing optimization for different motion detection applications.


Q: Is a temperature sensor integrated into this device?
A: Yes, the BMA250E includes a built-in temperature sensor, useful for environmental monitoring and offset compensation.


Q: What is the physical package size for the BMA250E?
A: It comes in a 12-LGA package measuring 2x2 mm, ideal for space-constrained surface-mount PCB designs.


Q: Does the BMA250E have power-saving features?
A: Yes, it includes a sleep mode for lower power consumption, critical for battery-powered IoT and wearable devices.


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