Analog Devices Inc. ADXL345TCCZ-EP-RL

The ADXL345TCCZ-EP-RL is an extended performance version of the ADXL345, a small, thin, ultralow power, 3-axis accelerometer produced by Analog Devices Inc. This device is designed for high-resolution (13-bit) measurement of acceleration up to ±16 g. It is particularly suited for applications requiring an extended industrial temperature range of −55°C to +105°C. The ADXL345TCCZ-EP-RL measures both static acceleration of gravity in tilt-sensing applications and dynamic acceleration resulting from motion or shock. It features digital output data formatted as 16-bit twos complement, accessible through either SPI (3- or 4-wire) or I2C digital interfaces.

• Ultralow Power Consumption: As low as 23 µA in measurement mode and 0.1 µA in standby mode at VS = 2.5 V.
• High Resolution: 13-bit measurement with a resolution of 3.9 mg/LSB, enabling inclination changes less than 1.0° to be measured.
• Special Sensing Functions: Activity and inactivity sensing, tap sensing (single and double taps), and free-fall sensing. These functions can be mapped to two interrupt output pins.
• Integrated Memory Management: A 32-level first in, first out (FIFO) buffer to store data, minimizing host processor activity and lowering system power consumption.
• Low Power Modes: Intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.
• Digital Interfaces: SPI (3- or 4-wire) and I2C interfaces for data output.
• Compact Package: 3 mm × 5 mm × 1 mm, 14-lead LGA package).

• Industrial Equipment: Suitable for extended temperature range industrial applications.
• Aerospace Equipment: Designed for use in aerospace environments.
• Handsets and Mobile Devices: Ideal for mobile device applications due to its low power consumption and small size.
• Medical Instrumentation: Used in various medical devices requiring precise acceleration measurements.
• Gaming and Pointing Devices: Utilized in gaming controllers and pointing devices for motion sensing).
• Personal Navigation Devices: Employed in personal navigation devices for orientation and motion detection).
• Hard Disk Drive (HDD) Protection: Used to protect HDDs from shocks and drops).

1. What is the measurement range of the ADXL345TCCZ-EP-RL?

   The measurement range is user-selectable at ±2, ±4, ±8, or ±16 g).

2. What are the operating voltage ranges for the ADXL345TCCZ-EP-RL?

   The operating voltage range is from 2.0 V to 3.6 V for VS, and 1.7 V to 1.8 V for VDD I/O).

3. What are the power consumption characteristics of the ADXL345TCCZ-EP-RL?

   The device consumes as low as 23 µA in measurement mode and 0.1 µA in standby mode at VS = 2.5 V).

4. What special sensing functions does the ADXL345TCCZ-EP-RL support?

   The device supports activity and inactivity sensing, tap sensing, and free-fall sensing).

5. How does the ADXL345TCCZ-EP-RL manage data storage?

   The device features a 32-level first in, first out (FIFO) buffer to store data, minimizing host processor activity and lowering system power consumption).

6. What digital interfaces are available on the ADXL345TCCZ-EP-RL?

   The device supports SPI (3- or 4-wire) and I2C digital interfaces for data output).

7. What is the package size of the ADXL345TCCZ-EP-RL?

   The device is packaged in a 3 mm × 5 mm × 1 mm, 14-lead LGA package).

8. What is the operating temperature range of the ADXL345TCCZ-EP-RL?

   The operating temperature range is from −55°C to +105°C).

9. Can the ADXL345TCCZ-EP-RL be used in aerospace applications?
10. How does the ADXL345TCCZ-EP-RL manage power in low power modes?

    The device enables intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation).