ADXL380

推荐用于新设计

Low Noise, Low Power, Wide Bandwidth, 3-Axis MEMS Accelerometer

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ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许，也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。
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概述

  • Ultralow noise density: 20 μg/√Hz (XY), 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 temperaturerange)
  • Electromechanical self test
  • 10,000 g mechanical shock survival
  • RoHS compliant
  • Operating temperature range: −40°C to +85°C
  • 14-terminal, 2.9 mm × 2.8 mm × 0.87 mm, LGA package

The ADXL380 is a low noise density, low power, 3-axis accelerometer with selectable measurement ranges. The ADXL380 supports the ±4 g, ±8 g, and ±16 g ranges.

The ADXL380 offers industry leading noise, enabling precision applications with minimal calibration. The low noise and low power ADXL380 enables accurate measurements of audio signals or heart sounds even in high vibration environments.

The ADXL380 multifunction pin names may be referenced only by their relevant function for either the serial peripheral interface (SPI) or inter-IC(I2C) interface, or these pin names can be referenced by their audio function (pulse density modulation (PDM), inter-IC sound (I2S), or time division multiplexing (TDM)).

In addition to its low power consumption, the ADXL380 has many features to enable true system level performance. These features include a built-in micropower temperature sensor, singletap, double tap, and triple tap detection, and a state machine to prevent false triggering. In addition, the ADXL380 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 can interface, if necessary, to a host operating on a separate supply voltage. The ADXL380 is available in a 14-terminal, 2.9 mm × 2.8 mm × 0.87 mm, LGA package.

APPLICATIONS

  • Audio and active noise cancellation (ANC)
  • Robotics
  • Wearables and low power motion detection
  • Seismic imaging
  • Condition-based monitoring
ADXL380
Low Noise, Low Power, Wide Bandwidth, 3-Axis MEMS Accelerometer
ADXL380 Chip Image ADXL380/ADXL382 Functional Block Diagram ADXL380 Pin Configuration
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