NXP USA Inc.
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MMA7268QT

MMA7268QT

Product Overview

The MMA7268QT is a three-axis low-g accelerometer sensor belonging to the category of motion sensors. It is commonly used in applications requiring accurate measurement of acceleration, tilt, and motion detection. The sensor exhibits characteristics such as high sensitivity, low power consumption, and small package size. Typically, it is available in a surface-mount package and is sold individually or in bulk quantities.

Specifications

  • Sensitivity: 800 mV/g
  • Operating Voltage: 2.2V - 3.6V
  • Current Consumption: 400 µA
  • Output Type: Analog
  • Temperature Range: -40°C to +85°C
  • Dimensions: 5mm x 5mm x 1.45mm

Detailed Pin Configuration

The MMA7268QT features a total of 16 pins, with each pin serving specific functions related to power supply, ground, and analog output for the X, Y, and Z axes.

| Pin Number | Function | |------------|----------------| | 1 | Vcc (Power) | | 2 | GND (Ground) | | 3 | Xout | | 4 | Yout | | 5 | Zout | | ... | ... |

Functional Features

The MMA7268QT offers high accuracy in measuring acceleration along three axes, making it suitable for applications requiring precise motion detection and tilt sensing. Its low power consumption and compact size make it ideal for portable and battery-powered devices.

Advantages and Disadvantages

Advantages

  • High sensitivity
  • Low power consumption
  • Small form factor
  • Accurate measurement of acceleration

Disadvantages

  • Limited temperature range
  • Analog output requires external ADC for digital processing

Working Principles

The MMA7268QT operates based on the principle of capacitive sensing, where changes in capacitance due to acceleration are converted into analog voltage signals. These signals are then processed to determine the magnitude and direction of the applied acceleration.

Detailed Application Field Plans

The MMA7268QT finds extensive use in various fields, including: - Robotics: for precise motion control and stability - Automotive: for vehicle tilt and impact detection - Consumer Electronics: in gaming controllers and virtual reality devices - Industrial Equipment: for vibration monitoring and equipment health diagnostics

Detailed and Complete Alternative Models

Some alternative models to the MMA7268QT include: - ADXL335 from Analog Devices - LIS3LV02DQ from STMicroelectronics - KXTC9 from Kionix

In conclusion, the MMA7268QT is a versatile three-axis accelerometer sensor with high sensitivity and low power consumption, making it suitable for a wide range of applications across different industries.

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רשום 10 שאלות ותשובות נפוצות הקשורות ליישום של MMA7268QT בפתרונות טכניים

  1. What is the MMA7268QT accelerometer used for?

    • The MMA7268QT accelerometer is commonly used to measure acceleration in technical solutions, such as tilt sensing, vibration monitoring, and motion detection.

  2. What is the operating voltage range of the MMA7268QT?

    • The operating voltage range of the MMA7268QT is typically 2.2V to 3.6V.

  3. How can I interface with the MMA7268QT accelerometer?

    • The MMA7268QT can be interfaced with a microcontroller using analog voltage outputs or through digital interfaces like ADCs.

  4. What are the sensitivity levels of the MMA7268QT?

    • The MMA7268QT has selectable sensitivity levels of ±1.5g, ±2g, and ±6g, allowing for flexibility in different applications.

  5. Can the MMA7268QT be used for impact detection?

    • Yes, the MMA7268QT can be utilized for impact detection by measuring sudden changes in acceleration beyond a certain threshold.

  6. Is the MMA7268QT suitable for low-power applications?

    • The MMA7268QT features a low-power mode, making it suitable for battery-powered or energy-efficient applications.

  7. What is the output format of the MMA7268QT?

    • The MMA7268QT provides analog voltage outputs proportional to the measured acceleration along the X, Y, and Z axes.

  8. How can I calibrate the MMA7268QT for accurate measurements?

    • Calibration of the MMA7268QT involves setting the appropriate sensitivity level and compensating for any offset voltages to ensure accurate readings.

  9. Can the MMA7268QT be used in automotive applications?

    • Yes, the MMA7268QT can be employed in automotive applications for tasks such as vehicle stability control and rollover detection.

  10. Are there any specific mounting considerations for the MMA7268QT?

    • Mounting the MMA7268QT securely and ensuring proper orientation is important for accurate measurement, especially in applications sensitive to gravitational forces.