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Motion Sensors - Accelerometers

Image Part Number Description / PDF Quantity Rfq
ADXL356BEZ

ADXL356BEZ

Analog Devices, Inc.

ACCEL 10-20G ANALOG 14CLCC

0
AD22372Z-RL

AD22372Z-RL

Analog Devices, Inc.

ULP, HIGH-G ADXL372 DERIVATIVE

0
ADXL202JE-REEL

ADXL202JE-REEL

Analog Devices, Inc.

DUAL AXIS ACCELEROMETER WITH DUT

11575
AD22262-3

AD22262-3

Analog Devices, Inc.

50G ACCELEROMETER

2691
AD22372Z-RL7

AD22372Z-RL7

Analog Devices, Inc.

ULP, HIGH-G ADXL372 DERIVATIVE

0
ADXL202JQC-REEL

ADXL202JQC-REEL

Analog Devices, Inc.

DUAL-AXIS IMEMS ACCELEROMETER

4500
ADXL323KCPZ-RL7

ADXL323KCPZ-RL7

Analog Devices, Inc.

SMALL, LOW POWER, 2 AXIS +/ 3 G

245
ADXL371BCCZ-RL7

ADXL371BCCZ-RL7

Analog Devices, Inc.

MICROPOWER THREE-AXIS 400G ACCEL

0
ADXL371BCCZ-RL

ADXL371BCCZ-RL

Analog Devices, Inc.

MICROPOWER THREE-AXIS 400G ACCEL

0
AD22262-2

AD22262-2

Analog Devices, Inc.

50G ACCELEROMETER

332
AD22308

AD22308

Analog Devices, Inc.

ACCELEROMETER 8CLCC

0
AD22302

AD22302

Analog Devices, Inc.

ACCEL 70G/35G ANALOG 8CLCC

0
AD22298

AD22298

Analog Devices, Inc.

ACCELEROMETER 8CLCC

0
AD22286-REEL

AD22286-REEL

Analog Devices, Inc.

ACCEL 70G/35G ANALOG 8CLCC

0
ADIS16240ABCZ

ADIS16240ABCZ

Analog Devices, Inc.

ACCELEROMETER 19G SPI 112PBGA

0
AD22284-A-R2

AD22284-A-R2

Analog Devices, Inc.

ACCELEROMETER 35G ANALOG 8CLCC

0
AD22279-A

AD22279-A

Analog Devices, Inc.

ACCELEROMETER 35G ANALOG 8CLCC

0
AD22282-A

AD22282-A

Analog Devices, Inc.

ACCELEROMETER 120G ANALOG 8CLCC

0
ADXL345XCCZ-RL

ADXL345XCCZ-RL

Analog Devices, Inc.

ACCEL 2-16G I2C/SPI 14LGA

0
ADXL345XCCZ-RL7

ADXL345XCCZ-RL7

Analog Devices, Inc.

ACCEL 2-16G I2C/SPI 14LGA

0

Motion Sensors - Accelerometers

1. Overview

Accelerometers are motion sensors that measure acceleration forces (static or dynamic) along one or multiple axes. These devices convert mechanical motion into electrical signals, enabling quantitative analysis of vibration, tilt, shock, and dynamic movement. As core components in modern sensing systems, accelerometers play critical roles in consumer electronics, industrial automation, automotive safety systems, and aerospace navigation.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Capacitive MEMSHigh sensitivity, low power consumption, digital outputSmartphones, wearable devices
PiezoelectricSelf-powered, excellent frequency responseVibration analysis, impact detection
PiezoresistiveHigh shock tolerance, analog outputAutomotive crash testing, industrial monitoring
Servo (Force-Balance)Ultra-high precision, low noiseInertial navigation, seismic monitoring
Optical MEMSImmune to electromagnetic interferenceHigh-precision scientific instruments

3. Structure and Components

Typical accelerometers consist of: - Seismic mass with specific inertial properties - Elastic suspension elements (springs or beams) - Displacement detection circuit (capacitive, piezoelectric, or resistive) - Temperature compensation circuitry - Signal conditioning electronics - Protective housing (metal/ceramic/polymer) Modern MEMS devices integrate microstructures on silicon substrates with digital interfaces (I2C/SPI).

4. Key Technical Specifications

ParameterDescriptionImportance
Measurement Range 2g to 500gDetermines application suitability
Resolution0.1mg to 10mgImpacts measurement precision
Frequency ResponseDC to 10kHzAffects dynamic signal capture
Nonlinearity 0.1% to 1% FSMeasurement accuracy indicator
Temperature Range-40 C to +150 CEnvironmental reliability
Power Consumption5 A to 10mABattery life consideration

5. Application Fields

  • Consumer Electronics: Smartphones (screen rotation), gaming controllers
  • Automotive: Airbag deployment, electronic stability control (ESC)
  • Industrial: Predictive maintenance systems, vibration monitoring
  • Healthcare: Fall detection devices, rehabilitation equipment
  • Aerospace: Flight control systems, structural health monitoring
  • Case Study: iPhone's ADXL345 MEMS accelerometer enables step counting and orientation detection

6. Leading Manufacturers

ManufacturerRepresentative ProductKey Features
Analog DevicesADXL3453-axis, 13-bit resolution, I2C interface
STMicroelectronicsLSM6DSO6-axis IMU, AI-enabled edge computing
Bosch SensortecBMI270Low-power wearable sensor, 16Hz noise
TE ConnectivityKX134-1211 400g high-shock measurement
HoneywellQA-750Tactical-grade servo accelerometer

7. Selection Guidelines

  • Determine required measurement axes (1D/2D/3D)
  • Match range/sensitivity with application requirements
  • Assess environmental conditions (temperature, vibration)
  • Select appropriate output interface (analog/digital)
  • Evaluate power consumption constraints
  • Consider calibration requirements and long-term stability

8. Industry Trends

Key development directions include: - MEMS technology advancement towards atomic-scale sensitivity - Integration with gyroscopes and AI processing (smart sensors) - Wireless sensor network compatibility - Increased adoption in autonomous vehicles and IoT edge devices - Development of ultra-low-power wake-up accelerometers - Fiber optic accelerometer systems for aerospace applications - Enhanced shock survivability for industrial harsh environments

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