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ADXL213:  Low Cost ±1.2g Dual Axis Accelerometer

The ADXL213 is a low cost, low power, complete dual axis accelerometer with signal conditioned, duty cycle modulated outputs, all on a single monolithic IC. The ADXL213 measures acceleration with a full-scale range of ±1.2 g (typical). The ADXL213 can measure both dynamic acceleration (e.g., vibration) and static acceleration (e.g., gravity).

The outputs are digital signals whose ...More

ADXL213:  Low Cost ±1.2g Dual Axis Accelerometer

Product Description

The ADXL213 is a low cost, low power, complete dual axis accelerometer with signal conditioned, duty cycle modulated outputs, all on a single monolithic IC. The ADXL213 measures acceleration with a full-scale range of ±1.2 g (typical). The ADXL213 can measure both dynamic acceleration (e.g., vibration) and static acceleration (e.g., gravity).

The outputs are digital signals whose duty cycles (ratio of pulse width to period) are proportional to acceleration (30%/g). The duty cycle outputs can be directly measured by a microcontroller without an A/D converter or glue logic.

Innovative design techniques are used to ensure high zero g bias stability (typically better than 0.25 mg/°C), as well as tight sensitivity stability (typically better than 50 ppm/°C).

The typical noise floor is 160 μg/√Hz with overbar, allowing signals below 1 mg (0.06° of inclination) to be resolved in tilt sensing applications using narrow bandwidths (<60 Hz).

The user selects the bandwidth of the accelerometer using capacitors CX and CYM at the XFILT and YFILT pins. Bandwidths of 0.5 Hz to 250 Hz may be selected to suit the application.

The ADXL213 is available in a 5mm x 5mm x 2mm, 8-pad hermetic LCC package.

Applications
  • Automotive tilt alarm
  • Data projectors
  • Navigation
  • Platform stabilization/leveling
  • Alarms and motion detectors
  • High accuracy, 2-axis tilt sensing

    • RESOURCES & TOOLS

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    • Dual axis accelerometer on a single IC chip
    • 5 mm × 5 mm × 2 mm LCC package
    • 1 mg resolution at 60 Hz
    • Low power: 700 µA at Vs = 5 V (typical)
    • High zero g bias stability
    • High sensitivity accuracy
    • Pulse width modulated digital outputs
    • X and Y axes aligned to within 0.1° (typical)
    • BW adjustment with a single capacitor
    • Single-supply operation
    • 3500 g shock survival

    Functional Block for ADXL213

    OF NOTE ...

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    Part# # of Axes Range Sensitivity Sensitivity Accuracy (%) Output Type Typical Bandwidth (kHz) Noise Density (µg/rtHz) Voltage Supply (V) Supply Current Temp Range (°C) Package Price* (1000-4999) Regional Recommendation
    ADXL325 3 +/- 5g 174 mV/g ±10 Analog 1.6 250 1.8 to 3.6 350µA -40 to 85°C 4mm x 4mm LFCSP $2.38 -
    ADXL326 3 +/- 16g 57 mV/g ±10 Analog 1.6 250 1.8 to 3.6 350µA -40 to 85°C 4mm x 4mm LFCSP $2.38 -
    ADXL327 3 +/- 2g 420 mV/g ±10 Analog 1.6 250 1.8 to 3.6 350µA -40 to 85°C 4mm x 4mm LFCSP $2.38 -
    ADXL335 3 +/- 3g 300 mV/g ±10 Analog 1.6 300 1.8 to 3.6 350µA -40 to 85°C 4mm x 4mm LFCSP $2.38 -
    ADXL345 3 +/- 2/4/8/16g up to 256 LSB/g ±10 Digital 1.6 - 2.0 to 3.6 145µA -40 to 85°C 3mm x 5mm x 1mm LGA $3.04 -
    ADXL346 3 +/- 2/4/8/16g up to 256 LSB/g ±10 Digital 1.6 - 1.7 to 2.75 145µA -40 to 85 3mm x 3mm x 0.95 mm LGA - -
    ADXL103 1 +/- 1.7g 1000 mV/g ±4 Analog 2.5 110 3 to 6 0.7mA -40 to 125°C 5mm x 5mm x 2mm LCC $8.19 -
    ADXL203 2 +/- 1.7g 1000 mV/g ±4 Analog 2.5 110 3 to 6 0.7mA -40 to 125°C 5mm x 5mm x 2mm LCC $9.85 jp
    ADXL213 2 +/- 1.2g 30 %/g ±10 PWM 2.5 160 3 to 6 0.7mA -40 to 85°C 5mm x 5mm x 2mm LCC $9.85 -
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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.