MMA1211KEGR2

Motion Sensors - Accelerometers

Motion sensors, such as accelerometers, are used to measure and detect movement. They can be used for a variety of applications including robotics, avionics, and automotive systems. The MMA1211KEGR2 is a digital piezoresistive accelerometer manufactured by Analog Devices and designed for use in acceleration and tilt sensing.

Application Field

The MMA1211KEGR2 is a 3-axis, low-power accelerometer suitable for a wide range of application requirements. It is capable of measuring acceleration from -2 g to +2 g and is suitable for a variety of applications in robotics, avionics, automotive systems, and consumer electronics. It can be used in aerospace, biomedical, and navigation applications. The device is also ideal for applications requiring shock and vibration measurement or tilt sensing. It provides three user-selectable acceleration ranges – 2 g, 4 g, and 8 g – and two user-defined temperature compensation coefficients.

Working Principle

The MMA1211KEGR2 is based on a piezoresistive silicon accelerometer. It works by converting the acceleration into an electrical signal dependent on the piezoresistive material’s resistance. It produces an output voltage proportional to the acceleration applied to the device through differential pressure data. The device also utilizes dynamic compensation to reduce temperature sensitivity and provide stability.

The accelerometer contains three on-board temperature sensors to measure the temperature of the sensing element and the surrounding environment. These sensors are used to dynamically correct the device’s temperature sensitivity. Additionally, the accelerometer’s digital output enables low-noise signal transmission and makes the device resistant to interference. The broadband self-test for all three axes further ensures accuracy and reliable data acquisition.