MMA6855ALKGWR2

Series:	Automotive, AEC-Q100
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Digital
Axis:	X
Acceleration Range:	±120g
Sensitivity (LSB/g):	4.096
Sensitivity (mV/g):	--
Bandwidth:	--
Output Type:	SPI
Voltage - Supply:	3.135 V ~ 5.25 V
Features:	--
Operating Temperature:	-40°C ~ 105°C
Mounting Type:	Surface Mount
Package / Case:	16-QFN Exposed Pad
Supplier Device Package:	16-QFN-EP (6x6)

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Introduction

MMA6855ALKGWR2 is a type of motion sensor, also known as an accelerometer. These types of devices are used to measure the motion of an object with linear acceleration. This particular accelerometer is able to register movements in two axes (X and Y). It is equipped with voltage regulation, variable gain and selectable cut-off frequency.

Application Field

MMA6855ALKGWR2 is a highly popular accelerometer due to its wide range of applications. It is mainly used for industrial applications such as vibration analysis and monitoring. It is also frequently used for specific research studies, including studies in aviation, automotive, aerospace, marine, civil engineering, and vibration analysis. Additionally, it can be applied in home appliances or consumer electronics where shock and vibration are monitored and recorded.

Working Principle

MMA6855ALKGWR2 accelerometer utilizes a capacitive sensing system to decipher the acceleration produced by an object. This accelerometer uses two parallel-aligned plates which act as capacitor plates. In a stationary state, the plates hold no electrical charge; however, when subjected to acceleration, the dielectric material between the plates becomes compressed and forces an electrical charge on the plates. This electrical charge changes the capacitance between the plates and produces a measurable voltage. This voltage is then read by a built-in computer chip, deciphered, and then used to measure the acceleration of an object.In addition to using the capacitive system, MMA6855ALKGWR2 also utilizes Variable gain and cut-off frequency features. Variable gain ensures a wide range of detectable motions, from small movements to large movements. The cut-off frequency feature allows the user to adjust the frequency rate of detectable motions, which helps to detect more rapid and higher frequency movements.

Conclusion

MMA6855ALKGWR2 is an accelerometer that is able to detect the linear acceleration of an object in two axes. It is widely used for industrial and research purposes, as well as for consumer electronics and home appliances. It utilizes a capacitive sensing system to measure the acceleration, as well as variable gain and cut-off frequency features. Its wide range of applications make it a highly popular accelerometer.

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