Data Sheet

ADXL314

±200 g Range, 3-Axis Digital Accelerometer

Rev. A

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FEATURES

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±200 g measurement range

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

mode at VS = 2.5 V (typical)

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User selectable bandwidth up to 3200 Hz ODR

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Fixed 13-bit output resolution

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Supply voltage range: 2.0 V to 3.6 V

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Embedded memory management system with FIFO technology

minimizes host processor load

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Shock event detection

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Activity/inactivity monitoring

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

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Wide temperature range: −40 to +125°C

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10,000 g shock survival

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Pb free and RoHS compliant

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

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AEC-Q100 qualified for automotive applications

APPLICATIONS

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Tire and battery pack monitoring

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High force event detection

SIMPLIFIED FUNCTIONAL BLOCK DIAGRAM

Figure 1. Simplified Functional Block Diagram

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 manage-

ment 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.