ADXL213AE

The ADXL213AE is a complete 2-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/°C), as well as tight sensitivity stability (typically better than 50ppm/°C). 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).

• Dual axis accelerometer on a single IC chip
• 1mg 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-axis aligned to within 0.1° (typical)
• BW adjustment with a single capacitor
• 3500g Shock survival