ADXL372 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADXL372
Manufacturer

ADI
ChipWorker Part#

CW1205228893
Description

Micropower, 3-Axis, ±200g Digital Output, MEMS
Documentation

Datasheet

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ADXL372 Specifications

Attribute	Attribute Value

Part Number	ADXL372
Manufacturer	ADI
ChipWorker Part#	CW1205228893
Documentation	Datasheet
	expand all
Product Lifecycle Status	Recommended for New Designs

Product Description

Product Details
The ADXL372 is an ultralow power, 3-axis, ±200 _g_ MEMS accelerometer that consumes 22 μA at a 3200 Hz output data rate (ODR). The ADXL372 does not power cycle its front end to achieve its low power operation and therefore does not run the risk of aliasing the output of the sensor.
In addition to its ultralow power consumption, the ADXL372 has many features to enable impact detection while providing system level power reduction. The device includes a deep multimode output first in, first out (FIFO), several activity detection modes, and a method for capturing only the peak acceleration of over threshold events.
Two additional lower power modes with interrupt driven, wake-up features are available for monitoring motion during periods of inactivity. In wake-up mode, acceleration data can be averaged to obtain a low enough output noise to trigger on low g thresholds. In instant on mode, the ADXL372 consumes 1.4 μA while continuously monitoring the environment for impacts. When an impact event that exceeds the internally set threshold is detected, the device switches to normal operating mode fast enough to record the event.
High _g _applications tend to experience acceleration content over a wide range of frequencies. The ADXL372 includes a 4-pole low-pass antialiasing filter to attenuate out of band signals that are common in high _g_ applications. The ADXL372 also incorporates a high-pass filter to eliminate initial and slow changing errors, such as ambient temperature drift.
The ADXL372 provides 12-bit output data at 100 mg/LSB scale factor. The user can access configuration and data registers via the serial peripheral interface (SPI) or limited I2C protocol. The ADXL372 operates over a wide supply voltage range and is available in a 3 mm × 3.25 mm × 1.06 mm package.
Multifunction pin names may be referenced by their relevant function only.
**Applications**
Impact and shock detection
Asset health assessment
Portable Internet of Things (IoT) edge nodes
Concussion and head trauma detection
### Features and Benefits
±200_g_ measurement range
200 Hz to 3200 Hz user-selectable bandwidth with 4-pole anti-aliasing filter
Selectable over-sampling ratio
Adjustable high-pass filter
Ultralow power
Power can be derived from a coin cell battery
22 µA @ 3200 Hz ODR, 2.5 V supply
Low power, wake-up mode for low _g_ activity detection
1.4 μA instant on mode with adjustable threshold <0.1 μA standby mode
Built-in features for system-level power savings
Autonomous interrupt processing without processor intervention
Deep embedded FIFO to minimize host processor load
Ultralow power event monitoring detects impacts and wakes up fast enough to capture the transient events
Ability to capture and store peak acceleration values of events
Adjustable, low _g_ threshold activity/inactivity detection
Wide supply range: 1.6 V to 3.5 V
Acceleration sample synchronization via external trigger
SPI digital interface and limited 12C interface format support
12-bit output at 100 mg/LSB scale factor
Wide temperature range: -40°C to 105°C
Small, thin, 3 mm x 3.25 mm x 1.06 mm package

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