MMA9550LR1 Sensors, Transducers

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Digital
Axis:	X, Y, Z
Acceleration Range:	±2g, 4g, 8g
Sensitivity (LSB/g):	16393 (±2g) ~ 4098 (±8g)
Sensitivity (mV/g):	--
Bandwidth:	1.9Hz ~ 244Hz
Output Type:	I²C, SPI
Voltage - Supply:	1.71 V ~ 1.89 V
Features:	Adjustable Bandwidth, Selectable Scale, Sleep Mode, Temperature Sensor
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	16-VFLGA
Supplier Device Package:	16-LGA (3x3)

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MMA9550LR1 Motion Sensor

Introduction

The MMA9550LR1 motion sensor is a single-axis accelerometer used to measure motion along one axis. It is manufactured by Freescale Semiconductor, Inc., and is based on contactless capacitive detection. The accelerometer utilizes silicon micro machined accelerometer technology to measure acceleration in one direction. The MMA9550LR1 can be used in various applications, such as consumer electronics, security systems, automotive applications, and many more.

Applications

The MMA9550LR1 can be used in a wide variety of applications. Some of its main applications are in consumer electronics, security systems, automotive applications, and general motion sensing. In consumer electronics, the accelerometer can be used to measure movement for a range of applications. For example, it can be used to accurately measure the movement of a laptop, so it can detect when it is being moved. This can be put into use in security systems where motion sensors are used to detect unauthorized movement in an area. In the automotive industry, the accelerometer can be used to measure acceleration and deceleration of a vehicle. This can be used to improve safety by providing feedback to an electronic stability control system. This system can detect imminent skidding of the vehicle and automatically correct it. Additionally, the accelerometer can be used in general motion sensing applications, such as tracking movement of sports players. It can be used to monitor how they move and analyze their performance.

Working Principle

The MMA9550LR1 is a capacitive accelerometer, meaning it takes advantage of the change in capacitance caused by acceleration. This sensor uses MEMS (micro-electro-mechanical system) technology to measure acceleration. As the MEMS accelerometer moves, it changes the amount of capacitance generated between two plates. The change in capacitance is measured and then converted into a voltage or resistance, which is then read by an external circuit. The MMA9550LR1 uses micro-machined silicon technology, where the MEMS accelerometer is built on top of nanometer-sized electrical insulation layers and contact metal layers. This allows for very high sensitivity and accuracy when measuring acceleration. The MMA9550LR1 also features built-in temperature compensation, which helps it to achieve much higher accuracy and resolution. Finally, the accelerometer is built with a low-power design, which allows it to be used in battery powered devices without sacrificing too much power.

Conclusion

The MMA9550LR1 accelerometer is an extremely versatile and powerful motion sensing device. It can be used in a range of applications, from consumer electronics to automotive applications. Its ability to measure acceleration along one axis with accuracy and precision makes it a great choice for motion sensing applications.

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