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Technical ArticlesMEMS Sensors for Smart Infrastructures
Features and Benefits
- Hermetic package offers excellent long-term stability
- 0 g offset vs. temperature (all axes): 0.15 mg/°C maximum
- Low power, VSUPPLY (LDO enabled)
- 200 µA in measurement mode (digital)
- 21 µA in standby mode
- Digital output features
- Digital serial peripheral interface (SPI)/I2C interfaces
- 20-bit analog-to-digital converter (ADC)
- Data interpolation routine for synchronous sampling
- Programmable high- and low-pass digital filters
- Electromechanical self-test
- Integrated temperature sensor
- Voltage range options
- VSUPPLY with internal regulators: 2.25 V to 3.6 V
- V1P8ANA, V1P8DIG with internal low dropout regulator (LDO) bypassed: 1.8 V typical ± 10%
- Operating temperature range: -40°C to 125°C
- 14-terminal, 6 mm × 6 mm × 2.1 mm, LCC package, 0.26 grams
The ADXL355 is part of a new family of low noise density, low 0 g offset drift, low power, 3-axis MEMS accelerometers with selectable measurement ranges. The ADXL355 supports the ±2.048 g, ±4.096 g, and ±8.192 g ranges, and offers industry leading noise, offset drift over temperature, and long term stability, enabling precision applications with minimal calibration and with very low power consumption.
The ADXL355 and ADXL354 (analog output. See ADXL354 Product Page) perform high resolution vibration measurement with very low noise to enable the early detection of structural defects via wireless sensor networks. The low power consumption of the new ADXL354 and ADXL355 accelerometers lengthens battery life and allows extended product usage by reducing the time between battery changes. The low noise performance of the ADXL354 and ADXL355 with low power consumption makes it now possible to cost-effectively enable low level vibration measurement applications such as Structural Health Monitoring (SHM). Additionally, the tilt stability of ADXL354 and ADXL355 accelerometers delivers excellent repeatability over temperature and time, which is ideal for orientation and navigation systems in unmanned aerial vehicles using Inertial Measurement Units (IMUs) and inclinometers. By providing repeatable tilt measurement under all conditions, the new accelerometers enable minimal tilt error without extensive calibration in harsh environments.
The ADXL354 and ADXL355 accelerometers offer guaranteed temperature stability with null offset coefficients of 0.15mg/C (max). The stability minimizes resource and expense associated with calibration and testing effort, helping to achieve higher throughput for device OEMs. In addition, the hermetic package helps ensure that the end product conforms to its repeatability and stability specifications long after they leave the factory.
With output of ±2g to ±8g full scale range (FSR), selectable digital filtering from 1 Hz to 1 kHz, and low noise density of 25µ/√Hz at less than 200µA current consumption, ADXL355 MEMS accelerometer offers performance level comparable to much more expensive devices with less power consumption and BOM cost.
- Inertial measurement units (IMUs)/altitude and heading reference systems (AHRS)
- Platform stabilization systems
- Structural health monitoring
- Seismic imaging
- Tilt sensing
- Condition Monitoring
Markets & Technology
Industrial Automation Technology (IAT)
- Aerospace and Defense
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (2)
The PMOD compatible evaluation/prototyping board is a small form factor, low cost, low noise, and low drift, 3-axis accelerometer sensor measurement board. When prototyping, this board is used in conjunction with the ADICUP360 or the ADICUP3029 development platform. Direct electrical and physical connection will enable you to get started quickly with hardware and software, to help develop your solution.
SPI PMOD peripheral connectors can also be found on many 3rd party MCU or FPGA development boards, where the EVAL-ADXL355-PMDZ can be connected directly into those systems, and you can develop your own code using our reference code below.
The EVAL-ADXL35x-Z are simple evaluation boards that allow quick evaluation of the performance of Analog Devices new series of low power, low noise, low drift 3-axis, MEMS accelerometers. The series consists of both analog and digital output devices, supporting a variety of Full Scale Ranges (FSR). The model descriptions are shown in the ordering guide below. These evaluation boards are ideal for evaluation of the ADXL35x accelerometer series in an existing system because the stiffness and the small size of the evaluation board minimize the effect of the board on both the system and acceleration measurements.
Features & Benefits
- 2 sets of spaced vias for populating 6-pin headers
- Easily attachable to prototyping board or PCB
- Small size and board stiffness minimize impact on the system being monitored and acceleration measurements
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Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.