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MFG:ADI D/C:09
Part Number: ADXL345
MFG: ADI
D/C: 09
Description: The ADXL345 is a small, thin, low power, three-axis accelerometer with high resolution (13-bit) measur...
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ADXL345
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DataSheet
General Description
ADXL345 General Description
The ADXL345 is a small, thin, low power, three-axis accelerometer with high resolution (13-bit) measurement up to ±16 g. Digital output data is formatted as 16-bit twos complement and is accessible through either a SPI (3- or 4- wire) or I2C digital interface.
The ADXL345 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 (4mg/LSB) enables resolution of inclination changes of as little as 0.25°. 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 interrupt output pins. An integrated 32 level FIFO 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.
The ADXL345 is supplied in a small, thin 3 mm × 5 mm × 1 mm, 14-lead, plastic package.
ADXL345 Maximum Ratings
| Parameter | Rating |
| Acceleration (Any Axis, Unpowered) Acceleration (Any Axis, Powered) VS VDD I/O All Other Pins Output Short-Circuit Duration (Any Pin to Ground) Temperature Range (Powered) Temperature Range (Storage) |
10,000 g 10,000 g −0.3 V to 3.6 V −0.3 V to 3.6 −0.3 V to 3.6 Indefinite −40 to +105 −40 to +105 |
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ADXL345 Features
`Ultra low power: 25 to 130 A at VS = 2.5 V (typ)
`Power consumption scales automatically with bandwidth
`User selectable fixed 10-bit resolution or 4mg/LSB scale factor in all g-ranges, up to 13-bit resolution at ±16 g
`32 level output data FIFO minimizes host processor load
`Built in motion detection functions
• Tap/Double Tap detection
• Activity/Inactivity monitoring
• Free-Fall detection
`Supply and I/O voltage range: 1.8 V to 3.6 V
`SPI (3 and 4 wire) and I2C digital interfaces
`Flexible interrupt modes Any interrupt mappable to either interrupt pin
`Measurement ranges selectable via serial command
`Bandwidth selectable via serial command
`Wide temperature range (-40 to +85)
`10,000 g shock survival
`Pb free/RoHS compliant
`Small and thin: 3 * 5 * 1 mm LGA package
`Power consumption scales automatically with bandwidth
`User selectable fixed 10-bit resolution or 4mg/LSB scale factor in all g-ranges, up to 13-bit resolution at ±16 g
`32 level output data FIFO minimizes host processor load
`Built in motion detection functions
• Tap/Double Tap detection
• Activity/Inactivity monitoring
• Free-Fall detection
`Supply and I/O voltage range: 1.8 V to 3.6 V
`SPI (3 and 4 wire) and I2C digital interfaces
`Flexible interrupt modes Any interrupt mappable to either interrupt pin
`Measurement ranges selectable via serial command
`Bandwidth selectable via serial command
`Wide temperature range (-40 to +85)
`10,000 g shock survival
`Pb free/RoHS compliant
`Small and thin: 3 * 5 * 1 mm LGA package
ADXL345 Typical Application
·Handsets
·Gaming and pointing devices
·Personal navigation devices
·HDD protection
·Fitness equipment
·Digital cameras
·Gaming and pointing devices
·Personal navigation devices
·HDD protection
·Fitness equipment
·Digital cameras
ADX150
PDF/DataSheet Download
- Datasheet: ADX150
- File Size: 298962 KB
- Manufacturer:
- Click here to Download
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