Bosch Sensortec
Bild kan vara representation.
Se specifikationer för produktinformation.
BMA250E
Visa detalj Datablad

BMA250E

Introduction

The BMA250E is a versatile accelerometer sensor designed for various applications in the field of motion sensing and control. This entry provides an overview of the product, including its category, use, characteristics, package, essence, packaging/quantity, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, detailed application field plans, and alternative models.

Product Overview

  • Category: Accelerometer Sensor
  • Use: Motion Sensing and Control
  • Characteristics: High precision, low power consumption, compact design
  • Package: LGA (Land Grid Array)
  • Essence: MEMS (Micro-Electro-Mechanical Systems) technology
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Measurement Range: ±2g
  • Sensitivity: 256 LSB/g
  • Operating Voltage: 1.6V to 3.6V
  • Current Consumption: 135 μA
  • Output Data Rate: 100 Hz to 1000 Hz
  • Interface: I2C, SPI

Detailed Pin Configuration

The BMA250E features a 12-pin LGA package with the following pin configuration: 1. VDD (Power Supply) 2. GND (Ground) 3. SDA (I2C Data) 4. SCL (I2C Clock) 5. INT1 (Interrupt 1) 6. INT2 (Interrupt 2) 7. CSB (Chip Select) 8. SDI (SPI Data Input) 9. SDO (SPI Data Output) 10. SCK (SPI Clock) 11. N/C (No Connection) 12. N/C (No Connection)

Functional Features

  • Motion Detection: Detects changes in acceleration and orientation
  • Tap and Double-Tap Recognition: Identifies single and double taps on the sensor
  • Low Power Mode: Reduces power consumption for battery-operated devices
  • Free-Fall Detection: Recognizes free-fall events for safety applications

Advantages and Disadvantages

Advantages

  • Compact size enables integration into small form factor devices
  • Low power consumption prolongs battery life in portable applications
  • High sensitivity and precision provide accurate motion detection

Disadvantages

  • Limited measurement range compared to higher-range accelerometers
  • Higher noise levels at maximum sensitivity settings

Working Principles

The BMA250E operates based on the principles of MEMS technology, where microstructures within the sensor respond to external forces, converting mechanical motion into electrical signals. These signals are then processed to determine the magnitude and direction of acceleration, enabling precise motion detection and control.

Detailed Application Field Plans

The BMA250E finds extensive use in various applications, including: - Mobile Devices: Enables screen rotation, gesture recognition, and pedometer functions - Gaming Controllers: Provides motion-based gaming experiences - IoT Devices: Facilitates activity tracking and context awareness - Industrial Equipment: Supports vibration monitoring and tilt sensing

Detailed and Complete Alternative Models

  • BMA255: Offers a wider measurement range of ±4g
  • BMA280: Integrates additional features such as temperature measurement
  • BMA253: Provides lower power consumption for ultra-low-power applications

In conclusion, the BMA250E accelerometer sensor offers high precision and low power consumption, making it suitable for diverse motion sensing and control applications across various industries.

Word Count: 498

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av BMA250E i tekniska lösningar

  1. What is the BMA250E accelerometer used for?

    • The BMA250E accelerometer is commonly used for measuring acceleration and tilt in various technical solutions such as consumer electronics, industrial applications, and automotive systems.

  2. What is the operating voltage range of the BMA250E?

    • The operating voltage range of the BMA250E is typically between 1.65V and 3.6V, making it suitable for low-power applications.

  3. How does the BMA250E communicate with a microcontroller?

    • The BMA250E can communicate with a microcontroller using either SPI (Serial Peripheral Interface) or I2C (Inter-Integrated Circuit) communication protocols.

  4. What is the resolution of the BMA250E accelerometer?

    • The BMA250E has a resolution of up to 10 bits, allowing for precise measurement of acceleration and tilt.

  5. Can the BMA250E be used for vibration monitoring?

    • Yes, the BMA250E can be utilized for vibration monitoring applications due to its ability to measure acceleration accurately.

  6. Is the BMA250E suitable for battery-powered devices?

    • Yes, the BMA250E is well-suited for battery-powered devices as it operates within a low voltage range and has low power consumption.

  7. Does the BMA250E have built-in motion detection features?

    • Yes, the BMA250E includes built-in motion detection and interrupt functionality, making it ideal for applications requiring motion sensing capabilities.

  8. What is the temperature range for the BMA250E?

    • The BMA250E has an extended temperature range from -40°C to +85°C, enabling its use in various environmental conditions.

  9. Can the BMA250E be used for orientation detection in electronic devices?

    • Yes, the BMA250E can be employed for orientation detection, allowing electronic devices to sense changes in position and orientation.

  10. Are there any specific mounting considerations for the BMA250E?

    • It is recommended to mount the BMA250E on a stable and flat surface to ensure accurate measurement of acceleration and tilt. Additionally, proper shock and vibration isolation may be necessary in certain applications to prevent erroneous readings.