GENERAL DESCRIPTION

The analog output ADXL354 and the digital output ADXL355 are low noise density, low 0 g offset drift, low power, 3-axis accelerometers with selectable measurement ranges. The ADXL354B supports the ±2 g and ±4 g ranges, the ADXL354C supports the ±2 g and ±8 g ranges, and the ADXL355 supports the ±2.048 g, ±4.096 g, and ±8.192 g ranges. The ADXL354/ADXL355 offer industry leading noise, minimal offset drift over temperature, and long term stability enabling precision applications with minimal calibration.

FEATURES

Hermetic package offers excellent long-term stability

0 g offset vs. temperature (all axes): 0.15 mg/°C maximum

Ultralow noise density (all axes): 20 μg/√Hz (ADXL354)

Low power, VSUPPLY (LDO enabled)

ADXL354 in measurement mode: 150 μA

ADXL355 in measurement mode: 200 μA

ADXL354/ADXL355 in standby mode: 21 μA

ADXL354 has user adjustable analog output bandwidth

ADXL355 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

APPLICATIONS

Inertial measurement units (IMUs)/altitude and heading reference systems (AHRSs)

Platform stabilization systems

Structural health monitoring

Seismic imaging

Tilt sensing

Robotics

Condition monitoring