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ADXL380 Low-Noise, Low-Power, Wide Bandwidth 3-Axis MEMS Accelerometer
Analog Devices low noise density 3-axis accelerometers support a wide bandwidth range and are ideal for high-vibration environments

The ADXL380 low noise density, low power, 3-axis accelerometer from Analog Devices has selectable measurement ranges to support ±4 g, ±8 g, and ±16 g. This accelerometer enables precision applications with minimal calibration, and the low noise density and low power features enable accurate measurements of audio signals or heart sounds, even in high-vibration environments. The ADXL380 has many additional features to enable true system-level performance, including a built-in micropower temperature sensor, single-tap, double-tap, and triple-tap detection, and a state machine to prevent false triggering. It also has provisions for external control of the sampling time and/or an external clock. The ADXL380 operates on a wide 2.25 V to 3.6 V supply range (or 1.8 V supply) and if necessary, it can interface to a host operating on a separate supply voltage. The ADXL380 is available in a 14-terminal 2.9 mm x 2.8 mm x 0.87 mm LGA package.

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  • Ultra-low noise density: 20 µg/√Hz (XY) and 27 µg/√Hz (Z)
  • Low power consumption
    • High performance: 340 µA
    • Ultra-low power: 33 µA
  • Wide bandwidth: 4 kHz
    • Relative flatness with equalization: <0.5 dB
    • Relative flatness without equalization: <2 dB
  • Low latency: group delay <110 µs
  • Digital features
    • 16-bit ADC
    • Multiprotocol serial interfaces: SPI or I²C
    • Multiprotocol audio data output: I²S, TDM, and PDM
    • Programmable LPF and HPF
    • Data synchronous or asynchronous sampling
    • Output FIFO: 320 word
  • Built-in features for system-level power savings
    • Single-tap, double-tap, and triple-tap detection
    • Activity and inactivity detection
    • Configurable interrupt modes
  • Integrated temperature sensor
  • Voltage range options
    • VS with internal regulators: 2.25 V to 3.6 V (or V1P8 at 1.8 V)
    • VDDIO: 1.14 V to 3.6 V (1.62 V to 3.6 V for full temperature range)
  • Electromechanical self-test
  • 10,000 g mechanical shock survival
  • RoHS-compliant
  • Operating temperature range: -40°C to +85°C
  • 14-terminal 2.9 mm x 2.8 mm x 0.87 mm LGA package