- Overview
- Features & Applications
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Overview
Featuring resolution of 4-milli-g/LSB (least-significant bit) across all g ranges, single tap and double tap detection, activity and inactivity detection, free fall detection, and user-programmable threshold levels, the new accelerometer also includes I2C and three- and four-wire SPI (serial peripheral interface) digital interfaces and a voltage range of 1.8V to 3.6V.
The ADXL345 motion sensor incorporates an on-chip FIFO (first-in/first-out) memory block that stores up to 32 sample sets of X, Y, and Z data. By sampling input data to determine if the system should be actively responding to a change in movement or acceleration, the new motion sensing devices save additional system power by off-loading that function from the host processor. Typically, a host processor consumes a dominant amount of system power budget, so allowing it to remain in sleep mode as long as possible can dramatically decrease overall power usage upwards of 75% of the budget, when utilized effectively. The ADXL345 is supplied in a small, thin, 3 mm × 5 mm × 1 mm, 14-lead, plastic package. |
Features
- Ultralow power: as low as 40µA in measurement mode and 0.1µA in standby mode at VS = 2.5V (typical)
- Power consumption scales automatically with bandwidth
- User-selectable resolution, fixed 10-bit resolution, or 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)
- Embedded, patent pending FIFO technology minimizes host
processor load
- Tap/double tap detection
- Activity/inactivity monitoring
- Free-fall detection
- Supply voltage range: 2.0V to 3.6V
- I/O voltage range: 1.7V to VS
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Applications
- Handsets
- Medical instrumentation
- Gaming
- Pointing devices
- Industrial instrumentation
- Personal navigation devices
- Hard disk drive (HDD) protection
- Fitness equipment
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| Available in Tape & Reel (TR-ND), Cut Tape (CT-ND), and custom Digi-Reel® (DKR-ND) |
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Digi-Key
Part Number
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Acceleration
Range
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Voltage Rating
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Package / Case
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Product Image
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±2g, 4g, 8g, 16g
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2V ~ 3.6V
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14-LGA
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Digi-Key
Part Number
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Overview
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Product Image
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Data
Sheet
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The iMEMS® ADXL345 inertial sensor evaluation system is a complete system that provides a fast and easy way to configure, evaluate, and analyze the performance characteristics and embedded features of the ultralow power digital 3-axis ADXL345 accelerometer.
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Digi-Key
Part Number
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Acceleration
Range
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Voltage Rating
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Package / Case
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Product Image
(Click to Enlarge)
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±75° to ±300°, ±1.7
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4.75V ~ 5.25V
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23mm x 23mm x 23mm Module
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