سنسور و مبدل سنسور حرکت شتاب‌سنج‌

Product Attributes

Introduction

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 ± 1.2g (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 0.25mg / ℃), as well as tight sensitivity stability (typically better than 50ppm / ℃) The typical noise floor is 160μg / √Hz, allowing signals below 1mg(0.06° of inclination) to be resolved in tilt sensing applications using narrow bandwidths (< 60Hz) The user selects the bandwidth of the accelerometer using capacitors Cₓ and Cᵧ at the X_FILT and Y_FILT pins. Bandwidths of 0.5Hz to 250Hz may be selected to suit the application. The ADXL213 is available in a 5mm×5mm×2mm 8- pad hermetic LCC package.

Features

• Dual axis accelerometer on a single IC chip
• 5mm×5mm×2mm LCC package
• 1 mg resolution at 60Hz
• Low power: 700μA at Vₛ = 5V (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
• 3500g shock survival
• Qualified for automotive applications

Applications

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