MMA7368LR2

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The MMA7368LR2 is a low-power, three-axis digital output accelerometer from Freescale Semiconductor. It is used in various applications, from consumer electronics to automotive motion sensing, and is based around a sensing element that offers a 230 mV/g scaling factor. The unit can measure accelerations up to ±3 g. It also offers motion detection latches and a pulse feature.

The MMA7368LR2 is classified as a motion sensor that contains an accelerometer used to detect changes in the direction or speed of movement. An accelerometer measures acceleration, which is the rate of change of the velocity of a body with respect to its own reference frame. These changes can be in the form of linear acceleration (acceleration due to a change in speed or direction of motion) or rotation (acceleration due to a change in the orientation of the body). The MMA7368LR2 measures acceleration in three orthogonal axes: X (horizontal), Y (vertical), and Z (depth).

The MMA7368LR2 operates on the principle of the capacitive transduction of linear acceleration. It comprises of a metal-oxide semiconductor (MOS) on an integrated substrate that oscillates in response to changes in an input of acceleration. When the force of the acceleration is sensed, the MOS capacitance between the integrated substrate and the oscillator changes. The capacitance is proportional to the acceleration, and the magnitude of the oscillation frequency indicates the value of the acceleration.

The accelerometer is equipped with an Integrated Circuit (IC) that works towards the sensing of the acceleration. The IC generates an output that is fed to a control circuit, where the signal is amplified and limited. A resolution of up to 10 bits is possible, and the low-power output of the accelerometer can be deployed in the power supply line. The digital output of the accelerometer can be employed for feeding an application-specific Interface.

The MMA7368LR2 is typically used in the design of electronic navigation systems. These systems collect motion-sensing data from sensors such as the MMA7368LR2 and increase the accuracy of navigation and tracking. Automotive applications of the unit include anti-lock brakes, airbag deployment, power steering, and seat belt pretensioners. The accelerometer is also ideal for rollover sensing, vibration monitoring, and inclination sensing in industrial and consumer applications.

The MMA7368LR2 is an ideal choice for applications that require the sensing and evaluation of acceleration and motion. Its highly sensitive MOS detection element enables the determination of linear acceleration, and the unit\'s low-power output can be integrated into a system\'s power supply. The accelerometer offers a digital output for applications that require a direct interface with the acceleration/motion-sensing signal. It can be used in a variety of application, from navigation systems to automotive safety, and is suitable for use in both commercial and industrial applications.

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