MMA5112LWR2

Series:	Automotive, AEC-Q100, MMA
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Digital
Axis:	Z
Acceleration Range:	±120g
Sensitivity (LSB/g):	4
Sensitivity (mV/g):	--
Bandwidth:	--
Output Type:	PCM, SPI
Voltage - Supply:	4.2 V ~ 17 V
Features:	Selectable Low Pass Filter
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	16-QFN Exposed Pad
Supplier Device Package:	16-QFN (6x6)

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MMA5112LWR2 Accelerometer

The MMA5112LWR2 accelerometer is a motion sensor used for a variety of applications. It uses the newest MEMS technology to detect changes in the acceleration of an object or platform. The device is typically used in inclinometer and automotive applications, and it\'s designed for long-term accuracy in harsh conditions. The MMA5112LWR2 offers a wide range of features, including adjustable dynamic range, low power consumption, and robust operation across a wide temperature range.

Application

The MMA5112LWR2 accelerometer is principally used in automotive and inclinometer applications for motion sensing or altitude measurement. Automotive applications include airbag release, traction control, stability control, and active suspension systems. Inclinometer applications include measuring roll and pitch for the level measurement of machine tools and other measuring devices.

Working Principle

The MMA5112LWR2 is a MEMS (Micro-electromechanical Systems) accelerometer whose principle of operation is based on the Coriolis Effect. It measures the rate of acceleration, deceleration, or tilt along its three axes and converts it into a digital signal that can be read with a microcontroller or other suitable processor.At the heart of the accelerometer is a vibrating structure made up of a silicon structure bonded onto a base plate. This structure is fixed to the base plate and the displacement of this structure is measured by two capacitive sensing elements (one in each axis). When acceleration changes, the Coriolis Effect causes the structure to move in a direction perpendicular to the applied acceleration. This displacement is measured by the capacitive sensing elements and is then converted into a digital signal. The digital signal is then transmitted to a microcontroller or processor where it can be used as input for a variety of applications.

Features

The MMA5112LWR2 accelerometer has a wide range of features that make it attractive for motion sensing applications.The MMA5112LWR2 has an adjustable dynamic range (ADR) of ±2 g to ±40 g. This allows the user to select the range of acceleration that they need. The device has a low power consumption of just 10 mW. This ensures the device is energy efficient as well as providing robust operation across a wide temperature range.The MMA5112LWR2 is also designed to be robust in harsh environmental conditions. It is insensitive to mechanical shock and vibration, and has mechanical shock immunity up to 5000 g. The device contains a temperature compensating ASIC, which ensures high accuracy in wide temperature ranges.Overall, the MMA5112LWR2 is an attractive solution for motion sensing applications, offering high accuracy, low power consumption, and robust operation in harsh environments.

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