ADXL345TCCZ-EP-RL7 - Analog Devices

ADXL345TCCZ-EP-RL7 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the ADXL345?
  The recommended PCB layout for the ADXL345 involves placing the accelerometer at the center of the PCB, with the sensitive axis (Z-axis) perpendicular to the PCB. The device should be placed away from high-frequency components and noise sources. A solid ground plane is recommended to reduce noise and improve performance.
• How do I calibrate the ADXL345?
  The ADXL345 does not require calibration in the classical sense. However, it is recommended to perform a zero-g offset calibration to remove any bias from the sensor. This can be done by taking multiple readings with the device at rest and averaging the results to determine the zero-g offset.
• What is the maximum acceleration range of the ADXL345?
  The ADXL345 has a maximum acceleration range of ±16g. However, the device can be configured to measure accelerations up to ±8g or ±4g by adjusting the sensitivity range.
• How do I interface the ADXL345 with a microcontroller?
  The ADXL345 communicates with a microcontroller through a SPI or I2C interface. The device requires a 3.3V power supply and a clock signal. The microcontroller can read data from the ADXL345 by sending a read command and clocking in the data.
• What is the power consumption of the ADXL345?
  The ADXL345 has a typical power consumption of 130 μA in normal operation mode. The device also has a low-power mode that reduces power consumption to 20 μA.