Analog Devices Inc. ADXL371BCCZ-RL7

Overview

ADXL371BCCZ-RL7 from Analog Devices is an ultra-low-power, 3-axis ±200 g MEMS accelerometer with 12-bit digital output, 28 µA current draw at 2560 Hz ODR, and SPI/I²C interfaces-designed for impact detection in battery-powered IoT edge nodes and concussion monitoring systems.

For engineers reviewing the ADXL371BCCZ-RL7 datasheet, ADXL371BCCZ-RL7 pinout, ADXL371BCCZ-RL7 application, or ADXL371BCCZ-RL7 equivalent, this page delivers verified specifications, validated pin functions, real-world use cases, and confirmed alternative parts for high-g transient sensing in constrained-power environments.

Technical Context

The ADXL371BCCZ-RL7 integrates a four-pole antialiasing low-pass filter (160–2560 Hz selectable) and an adjustable high-pass filter (0.19–24.38 Hz) to suppress temperature drift and DC offset while preserving high-frequency shock content. Its front-end remains continuously powered-eliminating aliasing risks inherent in duty-cycled architectures.

It supports autonomous event capture via deep multimode FIFO, instant-on impact detection (1.7 µA, <1.25 ms wake-up), and dual interrupt outputs (INT1/INT2) for synchronized sampling and external clocking-enabling system-level power savings without host processor intervention.

Key Specifications

Pinout & Package

ADXL371BCCZ-RL7 uses a 3 mm × 3.25 mm × 1.06 mm, 16-terminal LGA package (CC-16-4) with exposed pad for thermal performance and mechanical stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-g impact sensing applications.

Compared with ADXL371BCCZ-RL7, the ADXL372BCCZ-RL7 offers superior temperature stability and marginally lower power but sacrifices 200 g headroom; the FXLN83xxQR1 provides broader supply flexibility and cost advantage but lacks hardware-accelerated peak capture and true instant-on responsiveness-making ADXL371BCCZ-RL7 uniquely fit for medical-grade and industrial shock forensics.

Availability

ADXL371BCCZ-RL7 is available at Aetrix Electronics and suitable for impact detection in industrial assets, concussion monitoring in wearables, and portable IoT edge node sensing requiring stable component supply across extended product lifecycles.

Supply support for ADXL371BCCZ-RL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision sensing and power management.

The ADXL371BCCZ-RL7 belongs to Analog Devices' micropower MEMS accelerometer product line-engineered specifically for battery-constrained, high-g transient detection in medical, industrial, and automotive safety systems.

FAQ

What is the minimum detectable impact threshold for ADXL371BCCZ-RL7 in instant-on mode?

The ADXL371BCCZ-RL7 supports configurable impact thresholds in instant-on mode, with a default target range of 10 g to 15 g. Users can adjust registers to raise the threshold up to 30 g–40 g for higher immunity to false triggers. This setting is independent of ODR and operates with <1.25 ms latency to full-bandwidth recording-ensuring the ADXL371BCCZ-RL7 captures the initial transient phase of mechanical shocks.

Does ADXL371BCCZ-RL7 require external components for basic operation?

No, the ADXL371BCCZ-RL7 operates with only two external decoupling capacitors: 1.1 µF on VS and 1.1 µF on VDDI/O, as specified in the recommended soldering profile and power supply section. No external resistors, crystals, or filtering components are needed for functional SPI or I²C communication, FIFO operation, or interrupt generation-making the ADXL371BCCZ-RL7 a fully self-contained shock sensing solution.

Can ADXL371BCCZ-RL7 synchronize sampling with external events?

Yes, ADXL371BCCZ-RL7 supports hardware-triggered sampling via its INT2 pin, which doubles as a trigger input. When configured in triggered FIFO mode, the device captures acceleration data aligned to an external pulse-enabling time-correlated analysis with other sensors or system events. This capability is documented in the "Synchronized Data Sampling" section of the datasheet and requires no firmware overhead, as timing control is handled autonomously by the ADXL371BCCZ-RL7.

What is the FIFO depth and operational modes supported by ADXL371BCCZ-RL7?

The ADXL371BCCZ-RL7 features a 512-sample deep FIFO supporting three modes: Stream (last N), Oldest Saved (first N), and Triggered (capture on event). Each sample is 6 bytes (X/Y/Z, 12-bit each), yielding up to 3.072 kB of buffered data. The FIFO operates autonomously-storing data without CPU intervention-and supports watermark interrupts to notify the host when predefined fill levels are reached, directly reducing processor load in ADXL371BCCZ-RL7-based systems.

How does ADXL371BCCZ-RL7 achieve ultra-low power without aliasing risk?

The ADXL371BCCZ-RL7 avoids aliasing by maintaining continuous front-end operation-unlike duty-cycled accelerometers that power down between samples. Its analog signal chain remains active at all times, with digital oversampling and filtering applied post-conversion. This architecture ensures faithful reproduction of high-frequency shock waveforms up to 2560 Hz bandwidth while consuming only 28 µA at full rate-confirming that the ADXL371BCCZ-RL7's low power stems from efficient circuit design, not compromised signal integrity.