GENERAL DESCRIPTION

The analog output ADXL356 and the digital output ADXL357 are low noise density, low 0 g offset drift, low power, 3-axis accelerometers with selectable measurement ranges. The ADXL356B supports the ±10 g and ±20 g ranges, the ADXL356C supports the ±10 g and ±40 g ranges, and the ADXL357 supports the ±10 g, ±20 g, and ±40 g ranges.

FEATURES

Hermetic package offers optimal long-term stability

0 g offset vs. temperature (all axes): 0.75 mg/°C maximum

Ultralow noise spectral density (all axes): 75 μg/√Hz

Low power, VSUPPLY (LDO regulator enabled)

ADXL356 in measurement mode: 150 μA

ADXL357 in measurement mode: 200 μA

ADXL356/ADXL357 in standby mode: 21 μA

ADXL356 has user adjustable analog output bandwidth

ADXL357 digital output features

Digital SPI and limited I2C interfaces supported

20-bit ADC

Data interpolation routine for synchronous sampling

Programmable high- and low-pass digital filters

Integrated temperature sensor

Voltage range options

VSUPPLY with internal regulators: 2.25 V to 3.6 V

V1P8ANA, V1P8DIG with internal LDO regulator bypassed: 1.8 V

typical ± 10

Operating temperature range: −40°C to +125°C

14-terminal, 6 mm × 5.6 mm × 2.2 mm, LCC package

APPLICATIONS

Inertial measurement units (IMUs)/attitude and heading

reference systems (AHRSs)

Platform stabilization systems

Structural health monitoring

Seismic imaging

Tilt sensing

Robotics

Condition monitoring