GENERAL DESCRIPTION

The ADXL314 is a ±200 g range, 13-bit resolution, 3-axis digital

accelerometer. The digital output data is formatted as 16-bit, twos

complement data and is accessible through a serial peripheral

interface (SPI), 3-wire or 4-wire, or an I2C digital interface.

An integrated memory management system with a 32 level, first in,

first out (FIFO) buffer can store data to minimize host processor

activity and lower overall system power consumption.

Low power modes enable intelligent motion-based power management

with threshold sensing and active acceleration measurement

at low power dissipation, typically 65 μA for VS = 2.5 V at a 100 Hz

output data rate (ODR).

The ADXL314 is supplied in a small, thin 5 mm × 5 mm × 1.45 mm, 32-lead LFCSP.

FEATURES

► ±200 g measurement range

► Low power: 170 μA in measurement mode and 17 μA in standby

mode at VS = 2.5 V (typical)

► User selectable bandwidth up to 3200 Hz ODR

► Fixed 13-bit output resolution

► Supply voltage range: 2.0 V to 3.6 V

► Embedded memory management system with FIFO technology

minimizes host processor load

► Shock event detection

► Activity/inactivity monitoring

► SPI (3- or 4-wire) and I2C digital interfaces

► Wide temperature range: −40 to +125°C

► 10,000 g shock survival

► Pb free and RoHS compliant

► Small and thin: 32-lead, 5 mm × 5 mm × 1.45 mm LFCSP

► AEC-Q100 qualified for automotive applications

APPLICATIONS

► Tire and battery pack monitoring

► High force event detection