Overview
The ADXL372BCCZ-RL, produced by Analog Devices Inc., is an ultralow power, 3-axis, ±200 g MEMS accelerometer. This device is designed for high-g applications and features a micropower consumption profile, making it suitable for battery-powered devices and systems requiring low power operation. The ADXL372 does not power cycle its front end, eliminating the risk of aliasing the output of the sensor. It includes advanced features such as a deep multimode output FIFO, several activity detection modes, and the ability to capture peak acceleration values of events.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Measurement Range | ±200 | ±200 | g | |
| Bandwidth | 200 Hz | 3200 Hz | ||
| Output Resolution | 12 | 12 | Bits | |
| Scale Factor | 100 | mg/LSB | ||
| Power Consumption @ 3200 Hz ODR, 2.5 V supply | 22 | µA | ||
| Instant On Mode Power Consumption | 1.4 | µA | ||
| Standby Mode Power Consumption | < 0.1 | µA | ||
| Supply Voltage Range | 1.6 V | 3.5 V | ||
| Operating Temperature Range | −40°C | 105°C | ||
| Package Dimensions | 3 mm × 3.25 mm × 1.06 mm |
Key Features
- Ultralow power consumption: 22 µA at 3200 Hz output data rate (ODR) and < 0.1 µA in standby mode.
- ±200 g measurement range with 12-bit output resolution.
- User-selectable bandwidth from 200 Hz to 3200 Hz with a 4-pole antialiasing filter.
- Selectable oversampling ratio and adjustable high-pass filter.
- Deep multimode output FIFO to minimize host processor load.
- Autonomous interrupt processing without processor intervention.
- Low power, wake-up mode for low g activity detection and instant on mode consuming 1.4 µA.
- Ability to capture and store peak acceleration values of events.
- Adjustable low g threshold activity/inactivity detection.
- Acceleration sample synchronization via external trigger.
- SPI digital interface and limited I2C protocol support.
Applications
- Impact and shock detection.
- Asset health assessment.
- Portable Internet of Things (IoT) edge nodes.
- Concussion and head trauma detection.
Q & A
- What is the measurement range of the ADXL372?
The ADXL372 has a measurement range of ±200 g.
- What is the power consumption of the ADXL372 at 3200 Hz ODR?
The power consumption is 22 µA at 3200 Hz ODR with a 2.5 V supply.
- What are the key power-saving features of the ADXL372?
The device features ultralow power consumption, wake-up mode, instant on mode, and standby mode with < 0.1 µA power consumption.
- What interfaces does the ADXL372 support?
The ADXL372 supports SPI digital interface and limited I2C protocol.
- What is the operating temperature range of the ADXL372?
The operating temperature range is from −40°C to 105°C.
- What are the dimensions of the ADXL372 package?
The package dimensions are 3 mm × 3.25 mm × 1.06 mm.
- What is the purpose of the 4-pole antialiasing filter in the ADXL372?
The 4-pole antialiasing filter is used to attenuate out of band signals common in high g applications.
- How does the ADXL372 handle activity detection?
The ADXL372 includes several activity detection modes, including wake-up mode and instant on mode, with adjustable low g thresholds.
- Can the ADXL372 capture peak acceleration values of events?
Yes, the ADXL372 can capture and store peak acceleration values of events.
- What are some common applications of the ADXL372?
Common applications include impact and shock detection, asset health assessment, portable IoT edge nodes, and concussion and head trauma detection.
