NXP USA Inc.
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MMA7261QT
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MMA7261QT

Product Overview

The MMA7261QT is a three-axis low-g accelerometer belonging to the category of micro-electromechanical systems (MEMS) sensors. It is commonly used for measuring acceleration in various electronic devices and systems. The sensor possesses characteristics such as small size, low power consumption, and high sensitivity. It is typically packaged in a small, surface-mount package and is available in different quantities.

Specifications

  • Supply Voltage: 2.2V - 3.6V
  • Output Voltage Range: 0.25V - 2.55V
  • Sensitivity: 800mV/g
  • Operating Temperature Range: -40°C to +85°C
  • Package: 16-pin LGA

Detailed Pin Configuration

The MMA7261QT features a 16-pin LGA package with pin configurations as follows: 1. GND 2. XOUT 3. YOUT 4. ZOUT 5. ST 6. VDD 7. NC 8. NC 9. NC 10. NC 11. NC 12. NC 13. NC 14. NC 15. NC 16. NC

Functional Features

  • Three-axis sensing
  • Low power consumption
  • High sensitivity
  • Low profile
  • Embedded self-test

Advantages and Disadvantages

Advantages

  • Small form factor
  • Low power consumption
  • High sensitivity

Disadvantages

  • Limited measurement range
  • Sensitivity to external noise

Working Principles

The MMA7261QT operates based on the principle of capacitive sensing. When subjected to acceleration, the mass within the sensor causes a change in capacitance, which is then converted into an electrical signal proportional to the applied force.

Detailed Application Field Plans

The MMA7261QT finds applications in various fields including: - Motion detection in consumer electronics - Tilt sensing in automotive applications - Vibration monitoring in industrial equipment - Inertial navigation systems in aerospace

Detailed and Complete Alternative Models

Some alternative models to the MMA7261QT include: - ADXL335 from Analog Devices - LIS3LV02DQ from STMicroelectronics - KXTC9 from Kionix

In conclusion, the MMA7261QT is a versatile three-axis accelerometer suitable for a wide range of applications due to its small size, low power consumption, and high sensitivity.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de MMA7261QT en soluciones técnicas

  1. What is the MMA7261QT accelerometer used for?

    • The MMA7261QT accelerometer is commonly used to measure acceleration in various technical solutions, such as tilt sensing, vibration monitoring, and motion detection.

  2. What is the operating voltage range of the MMA7261QT?

    • The operating voltage range of the MMA7261QT is typically between 2.2V and 3.6V.

  3. How can I interface with the MMA7261QT accelerometer?

    • The MMA7261QT can be interfaced with a microcontroller or other digital circuitry using analog voltage outputs proportional to the measured acceleration.

  4. What is the sensitivity of the MMA7261QT accelerometer?

    • The sensitivity of the MMA7261QT can be set to either ±1.5g, ±2g, or ±6g by selecting appropriate resistors.

  5. Can the MMA7261QT be used for impact detection?

    • Yes, the MMA7261QT can be used for impact detection by measuring sudden changes in acceleration that exceed a certain threshold.

  6. What are some common applications of the MMA7261QT in automotive systems?

    • In automotive systems, the MMA7261QT can be used for airbag deployment algorithms, rollover detection, and vehicle stability control.

  7. How does temperature affect the performance of the MMA7261QT?

    • The temperature can affect the accuracy and output of the MMA7261QT, so it's important to consider temperature compensation techniques in the design.

  8. Can the MMA7261QT be used for orientation detection?

    • While the MMA7261QT can detect tilt and orientation changes, it may require additional processing to determine precise orientation.

  9. What are the key considerations when designing with the MMA7261QT?

    • Key considerations include power supply stability, noise filtering, calibration, and proper mounting to minimize mechanical stress.

  10. Is the MMA7261QT suitable for battery-powered applications?

    • Yes, the low operating voltage and low power consumption make the MMA7261QT suitable for battery-powered applications, such as portable devices and wearables.