ADXL382中文资料Low Noise, Low Power, Wide Bandwidth, 3-Axis MEMS Accelerometer数据手册ADI规格书

描述 Description

The ADXL382 is a low noise density, low power, 3-axis accelerometerwith selectable measurement ranges. The ADXL382 supports±15 g, ±30 g, and ±60 g ranges.

The ADXL382 offers industry leading noise, enabling precisionapplications with minimal calibration. The low noise and low powerof the ADXL382 enables accurate measurements of audio signalsor heart sounds even in high vibration environments.

The ADXL382 multifunction pin names may be referenced only bytheir relevant function for either the serial peripheral interface (SPI)or inter-IC (I2C) interface, or these pin names can be referencedby their audio function (pulse density modulation (PDM), inter-ICsound (I2S), or time division multiplexing (TDM)).In addition to its low power consumption, the ADXL382 has manyfeatures to enable true system level performance. These featuresinclude a built-in micropower temperature sensor, single tap, doubletap, or triple tap detection, and a state machine to prevent falsetriggering. In addition, the ADXL382 has provisions for externalcontrol of the sampling time and/or an external clock.

The ADXL382 operates on a wide, 2.25 V to 3.6 V supply range (or1.8 V supply) and can interface, if necessary, to a host operatingon a separate supply voltage. The ADXL382 is available in a14-terminal, 2.9 mm × 2.8 mm × 0.87 mm, LGA package.

特性 Features

Ultra low noise density: 44 μg/√Hz (XY), 55 μg/√Hz (Z)
Low power consumption
High performance: 520 μA
Ultra low power: 33 μA
Wide bandwidth: 8 kHz
Relative flatness with equalization:
Low latency: group delay:
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 shock survival
RoHS compliant
Operating temperature range: −40°C to +125°C
14-terminal, 2.9 mm × 2.8 mm × 0.87 mm, LGA plastic package

应用 Application

Condition-based monitoring
Structural health monitoring
Seismic Imaging
Robotics
Audio and active noise cancellation (ANC)
Wearables and low power motion detection