Overview
The ADXL345BCCZ from Analog Devices Inc. is a small, thin, and ultralow power 3-axis accelerometer. It is designed to measure both dynamic acceleration resulting from motion or shock and static acceleration, such as gravity, making it suitable for tilt-sensing applications. The device is housed in a 3 mm × 5 mm × 1 mm, 14-lead plastic Land Grid Array (LGA) package and is Pb-free/RoHS compliant.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Measurement Range | ±2g, ±4g, ±8g, ±16g | |||
| Nonlinearity | ±0.5% | % of full scale | ||
| Inter-Axis Alignment Error | ±0.1° | Degrees | ||
| Cross-Axis Sensitivity | ±1% | % | ||
| Output Resolution | 13-bit (16-bit twos complement output) | Bits | ||
| Supply Voltage | 2 V | 3.6 V | V | |
| Temperature Range | -40°C | 105°C | °C | |
| Package Type | 14-Pin LGA | |||
| Package Dimensions | 3 mm × 5 mm × 1 mm | mm |
Key Features
- Digital Output: The ADXL345 provides digital output data formatted as 16-bit twos complement, accessible through either SPI (3- or 4-wire) or I2C digital interfaces.
- High Resolution: Offers 13-bit measurement resolution, enabling precise measurement of inclination changes less than 1.0°.
- Special Sensing Functions: Includes activity and inactivity sensing, tap sensing (single and double taps), and free-fall sensing. These functions can be mapped to two interrupt output pins.
- Low Power Modes: Supports intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.
- FIFO Buffer: An integrated 32-level first in, first out (FIFO) buffer to store data and minimize host processor intervention.
- Small and Thin Package: Housed in a 3 mm × 5 mm × 1 mm, 14-lead LGA package, making it suitable for space-constrained applications.
Applications
- Mobile Devices: Well-suited for mobile device applications due to its low power consumption and high resolution.
- Tilt-Sensing: Measures the static acceleration of gravity, making it ideal for tilt-sensing applications.
- Motion Detection: Detects dynamic acceleration resulting from motion or shock, useful in various motion detection scenarios.
- Defense and Aerospace: The ADXL345-EP variant supports defense and aerospace applications, adhering to AQEC standards.
- General Industrial Use: Suitable for a wide range of industrial applications requiring precise acceleration measurement.
Q & A
- What is the measurement range of the ADXL345BCCZ?
The ADXL345BCCZ has a selectable measurement range of ±2g, ±4g, ±8g, or ±16g.
- What are the communication interfaces available for the ADXL345BCCZ?
The device supports both SPI (3- or 4-wire) and I2C digital interfaces.
- What is the power consumption of the ADXL345BCCZ?
The ADXL345BCCZ operates at extremely low power dissipation, making it suitable for battery-powered devices.
- What special sensing functions does the ADXL345BCCZ offer?
The device includes activity and inactivity sensing, tap sensing, and free-fall sensing, which can be mapped to two interrupt output pins.
- What is the temperature range of the ADXL345BCCZ?
The device operates within a temperature range of -40°C to 105°C.
- What is the package type and dimensions of the ADXL345BCCZ?
The device is housed in a 14-Pin LGA package with dimensions of 3 mm × 5 mm × 1 mm.
- Is the ADXL345BCCZ RoHS compliant?
Yes, the ADXL345BCCZ is Pb-free and RoHS compliant.
- What is the output resolution of the ADXL345BCCZ?
The device provides 13-bit measurement resolution, with the output data formatted as 16-bit twos complement.
- Does the ADXL345BCCZ have any integrated memory management?
Yes, it includes a 32-level first in, first out (FIFO) buffer to store data and minimize host processor intervention.
- What are some common applications of the ADXL345BCCZ?
The device is commonly used in mobile devices, tilt-sensing applications, motion detection, and various industrial scenarios.
