SmartElex ADXL335 Triple Axis Accelerometer Breakout

SmartElex ADXL335 Triple Axis Accelerometer Breakout Technical Information

Overview

The SmartElex ADXL335 is a low-power, analog-output, 3-axis accelerometer breakout module capable of measuring acceleration along X, Y, and Z axes.

• Measures:

  • Static acceleration (gravity)

  • Dynamic acceleration (motion, vibration)

   

• Output:

  • Analog voltage proportional to acceleration

   

• Range:

  • 3g (selectable on some variants)

   

Suitable for motion detection, tilt sensing, and basic inertial navigation.

Working Principle

MEMS Capacitive Sensing

• Uses Micro-Electro-Mechanical Systems (MEMS) capacitive ges distance between tiny internal plates capacitance change

• Internal circuitry converts capacitance analog voltage

Axis Measurement

• X, Y, Z axes measured independently

• Analog voltage outputs are proportional to g-force

Vout=Vzero'g+(Acceleration'Sensitivity)V_{out} = V_{zero-g} + (Acceleration Sensitivity)Vout=Vzero'g+(Acceleration'Sensitivity)

• Vzero'g'VCC/2V_{zero-g} \approx V_{CC}/2Vzero'g'VCC/2

• Sensitivity: ~300 mV/g (typical)

Measurement Characteristics

• Acceleration range: 3g

• Output type: Analog voltage (continuous)

• Sensitivity: ~300 mquency response: DC to 550 Hz

Electrical Characteristics

• Supply voltage: 1.8V3.6V

• Low power: 350 A typical at 3V

• Temperature range: 40C to +85C

Output Interface

• Analog outputs:

  • X, Y, Z axes connected to ADC of microcontroller

   

• GND Ground

• VCC Supply voltage

Internal Features

High Resolution

• MEMS accelerometer provides high-resolution analog output

Low Noise

• Low output noise for stable readings

Compact Package

• Small breakout suitable for embedded systems

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Operating Behavior

Motion Detection

• Detects:

  • Tilt angles

  • Movement

  • Shocks/vibrations

   

Analog Processing

• Output is linear with acceleration, enabling software to calculate angles or velocity

Orientation Sensing

• Can detect orientation relative to gravity for tilt detection

Environmental Characteristics

• Temperature: 40C to +85C

• Vibration and shock tolerant

• Suitable for portable and industrial applications

Limitations

• Analog output:

  • Requires ADC for microcontroller reading

   

• Accuracy affected by:

  • Noise

  • Temperali

    3g only (not for high-g applications)

   

Typical Pin Configuration

• VCC Power supply (1.83.6V)

• GND Ground

• XOUT X-axis analog output

• YOUT Y-axis analog output

• ZOUT Z-axis analog output

Functional Role

The module acts as a:

• 3-axis accelerometer

• Tilt and motion sensor

• Low-power inertial sensing device

Summary

The SmartElex ADXL335 Triple Axis Accelerometer is a compact, low-power MEMS sensor that:

• Measures acceleration along X, Y, Z axes

• Provides analog voltage output pro>tilt, motion, and vibration sensing

• Operates in wide temperature range and low voltage

• Is suitable for embedded systems, wearables, and robotics