ADXL-1345 Tripple Axis Accelerometer Module

DXL345 Tripple Axis Accelerometer Board is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16g. Digital output data is format as 16-bit twos complement and is accessible through either a SPI (3- or 4-wire) or I2C digital interface.

The ADXL345 Tripple Axis Accelerometer Board is well suited for mobile device applications. It measures the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (4 mg/LSB) enables measurement of inclination changes less than 1.0°.

Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion and if the acceleration on any axis exceeds a user-set level. Tap sensing detects single and double taps. Free-fall sensing detects if the device is falling. These functions can be mapped to one of two interrupt output pins. An integrated, patent pending 32-level first in, first out (FIFO) buffer can be used to store data to minimize host processor intervention.

Low power modes enable intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.

Specifications and Features:

1. Voltage – Supply : 3.3 V/ 5V.
2. Interface : I²C, SPI.
3. Sensing Range : ±2g, 4g, 8g, 16g.
4. Sensitivity:
5. X : 28.6 LSB/g.
6. Y : 31.2 LSB/g.
7. Z : 34.5 LSB/g.
8. Sensor Type : Accelerometer 3 Axis.
9. Dimensions : 28 mm x 14 mm.
10. Weight : 10 gm.
11. Ultra Low Power: 40µA in measurement mode, 0.1µA in standby@ 2.5V.
12. Free-Fall Detection.
13. Tap/Double Tap Detection.
14. Flexible interrupt modes mappable to either interrupt pin Measurement ranges selectable via serial command Bandwidth selectable via serial command
15. Wide temperature range (−40°C to +85°C).
16. 10,000 g shock survival.
17. Support 5V/3.3V voltage input, on-board RT9161 power chip, lower pressure drop faster than the 1117, faster load speed of response, very suitable for high-noise power supply environment.
18. User-selectable resolution
19. Fixed 10-bit resolution.
20. Full resolution, where resolution increases with g range, up to 13-bit resolution at ±16 g (maintaining 4 mg/LSB scale factor in all g ranges).

Applications :

1. Pointing devices.
2. Handsets.
3. Medical instrumentation.
4. Gaming.
5. Industrial instrumentation.
6. Personal navigation devices.
7. Hard disk drive (HDD) protection.
8. Fitness equipment.
9. defense and aerospace.