NXP USA Inc.
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MMA7455LR2
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MMA7455LR2

Product Overview

The MMA7455LR2 is a three-axis low-g accelerometer sensor designed for various applications in the consumer electronics, automotive, and industrial sectors. This sensor is known for its compact size, high sensitivity, and low power consumption, making it suitable for motion detection, tilt sensing, and vibration monitoring. The sensor is typically packaged in a small, surface-mount package and is available in various quantities to meet different production needs.

Category

The MMA7455LR2 belongs to the category of accelerometers, specifically as a three-axis low-g accelerometer sensor.

Use

This sensor is used for motion detection, tilt sensing, and vibration monitoring in a wide range of electronic devices and systems.

Characteristics

  • Compact size
  • High sensitivity
  • Low power consumption

Package

The MMA7455LR2 is typically packaged in a small, surface-mount package.

Essence

The essence of the MMA7455LR2 lies in its ability to accurately detect and measure acceleration in three axes, making it ideal for applications requiring precise motion and tilt sensing.

Packaging/Quantity

The sensor is available in various packaging options and quantities to accommodate different production requirements.

Specifications

  • Operating Voltage: 2.4V - 3.6V
  • Sensitivity: 800mV/g
  • Output Data Rate: 125Hz - 250Hz
  • Operating Temperature Range: -40°C to +85°C
  • Dimensions: 3mm x 5mm x 1mm

Detailed Pin Configuration

The MMA7455LR2 features a standard pin configuration with connections for power, ground, and data output for each axis.

| Pin Name | Description | |----------|-------------------| | VDD | Power Supply | | GND | Ground | | XOUT | X-Axis Output | | YOUT | Y-Axis Output | | ZOUT | Z-Axis Output | | ST | Self-Test Input | | SDA | I2C Data | | SCL | I2C Clock |

Functional Features

  • Three-axis acceleration measurement
  • I2C digital interface
  • Self-test capability
  • Low power consumption mode

Advantages and Disadvantages

Advantages

  • High sensitivity for accurate motion detection
  • Small form factor for easy integration into various devices
  • Low power consumption for extended battery life

Disadvantages

  • Limited measurement range compared to higher-g sensors
  • Requires careful calibration for precise measurements

Working Principles

The MMA7455LR2 operates based on the principles of micro-electromechanical systems (MEMS) technology. It utilizes capacitive sensing to measure acceleration in three axes and converts the analog signals into digital outputs using an internal analog-to-digital converter (ADC).

Detailed Application Field Plans

The MMA7455LR2 finds applications in: - Mobile devices for screen orientation and gaming control - Automotive systems for airbag deployment and vehicle stability control - Industrial equipment for vibration monitoring and structural health monitoring

Detailed and Complete Alternative Models

  • ADXL345: A similar three-axis accelerometer with a wider measurement range
  • LIS3DH: Another three-axis accelerometer with ultra-low power consumption

In conclusion, the MMA7455LR2 is a versatile three-axis low-g accelerometer sensor with high sensitivity and low power consumption, making it suitable for a wide range of applications in consumer electronics, automotive, and industrial systems.

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기술 솔루션에 MMA7455LR2 적용과 관련된 10가지 일반적인 질문과 답변을 나열하세요.

  1. What is the MMA7455LR2 accelerometer used for?

    • The MMA7455LR2 accelerometer is used to measure acceleration in three dimensions, making it suitable for applications such as motion detection, tilt sensing, and vibration monitoring.

  2. How do I interface with the MMA7455LR2 accelerometer?

    • The MMA7455LR2 can be interfaced with a microcontroller using standard communication protocols such as I2C or SPI.

  3. What is the operating voltage range of the MMA7455LR2?

    • The MMA7455LR2 operates within a voltage range of 2.4V to 3.6V.

  4. Can the MMA7455LR2 be used for impact detection in sports equipment?

    • Yes, the MMA7455LR2 can be utilized for impact detection in sports equipment to measure forces and impacts during use.

  5. Is the MMA7455LR2 suitable for automotive applications?

    • Yes, the MMA7455LR2 can be used in automotive applications for tasks such as detecting vehicle orientation and monitoring vehicle dynamics.

  6. What is the resolution of the MMA7455LR2 accelerometer?

    • The MMA7455LR2 has a resolution of 10 bits per axis, providing precise measurement capabilities.

  7. Can the MMA7455LR2 be used in wearable devices?

    • Yes, the MMA7455LR2 can be integrated into wearable devices to track motion, gestures, and orientation.

  8. Does the MMA7455LR2 have built-in motion detection features?

    • Yes, the MMA7455LR2 includes built-in motion detection functionality, making it suitable for applications requiring motion sensing.

  9. What are the typical power consumption characteristics of the MMA7455LR2?

    • The MMA7455LR2 has low power consumption, making it suitable for battery-powered applications, with typical current consumption in the range of a few milliamps.

  10. Are there any specific calibration requirements for the MMA7455LR2?

    • The MMA7455LR2 may require calibration to ensure accurate measurements, especially if used in precision applications. Calibration procedures are typically outlined in the datasheet and application notes provided by the manufacturer.