ADXL213 Low Cost ±1.2g Dual Axis Accelerometer _ BDTIC a Leading Distributor in China

ADXL213 Low Cost ±1.2g Dual Axis Accelerometer

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

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/√, 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.

Features and Benefits

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

MEMS

Accelerometers

Data Sheets

Document	note
ADXL213: Low Cost ±1.2 g Dual Axis Accelerometer Data Sheet (Rev. A)	PDF 359 kB

Application Notes

Document	note
AN-1057: Using an Accelerometer for Inclination Sensing (Rev. 0)	PDF 168 kB
AN-688: Phase and Frequency Response of iMEMS® Accelerometers and Gyros (Rev. 0)	PDF 135 kB
AN-0989: Transitioning from ADXL202 to ADXL213 or ADXL203 (Rev. 0)	PDF 76 kB
AN-652: Considerations for Soldering Accelerometers in LCC-8 Packages onto Printed Circuit Boards (Rev. 0)	PDF 396 kB
AN-604: Using the ADXL202 Duty Cycle Output (Rev. 0)	PDF 529 kB
AN-603: A Compact Algorithm Using the ADXL213 Duty Cycle Output (Rev. 0)	PDF 176 kB
AN-600: Embedding Temperature Information in the ADXL202's PWM Outputs (Rev. 0)	PDF 81 kB