MMA7260QT

Product Overview

The MMA7260QT is a three-axis low-g accelerometer sensor belonging to the category of motion sensing devices. It is commonly used in applications requiring accurate measurement of acceleration, tilt, and motion detection. The sensor possesses characteristics such as high sensitivity, low power consumption, and small package size. It is typically available in surface-mount technology (SMT) packages and is sold individually or in bulk quantities.

Specifications

• Operating Voltage: 2.2V to 3.6V
• Sensitivity: Selectable ±1.5g, ±2g, ±4g, or ±6g full-scale range
• Output Type: Analog voltage output
• Low Power Consumption: Typically 400μA
• Package Type: Quad Flat No-Lead (QFN)

Detailed Pin Configuration

The MMA7260QT features a total of 16 pins, including power supply, ground, and analog output pins for each axis. The pinout configuration is as follows:

| Pin Number | Function | |------------|---------------| | 1 | X-Axis Output | | 2 | Y-Axis Output | | 3 | Z-Axis Output | | 4 | GND | | 5 | VDD | | ... | ... |

Functional Features

The MMA7260QT provides accurate measurement of acceleration along the X, Y, and Z axes. It includes built-in signal conditioning circuitry, allowing direct interfacing with microcontrollers or analog-to-digital converters. The sensor also offers selectable sensitivity ranges, enabling customization based on specific application requirements.

Advantages and Disadvantages

Advantages

• High sensitivity for precise motion detection
• Low power consumption for extended battery life
• Small package size for space-constrained designs

Disadvantages

• Limited to three-axis measurement
• Analog output requires external ADC for digital processing

Working Principles

The MMA7260QT operates based on the principle of capacitive sensing. When subjected to acceleration or tilt, the sensor's internal capacitive structures undergo changes, resulting in corresponding variations in the analog output voltages for each axis. These voltage outputs are then processed to determine the magnitude and direction of the applied force.

Detailed Application Field Plans

The MMA7260QT finds extensive use in various applications, including: - Motion Sensing: Used in gaming controllers, virtual reality systems, and gesture recognition devices. - Inclination Measurement: Employed in automotive tilt sensors, industrial equipment leveling, and platform stabilization systems. - Vibration Monitoring: Integrated into structural health monitoring systems and machinery condition monitoring devices.

Detailed and Complete Alternative Models

Some alternative models to the MMA7260QT include: - ADXL335: A similar three-axis accelerometer with analog output from Analog Devices. - MPU-6050: A six-axis accelerometer and gyroscope combination sensor from InvenSense. - BMA180: A digital three-axis accelerometer from Bosch Sensortec.

In conclusion, the MMA7260QT is a versatile three-axis accelerometer sensor suitable for a wide range of motion sensing and tilt measurement applications. With its high sensitivity, low power consumption, and compact form factor, it offers an effective solution for designers seeking reliable motion detection capabilities.

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