FXLS8974CF_V01中文資料恩智浦?jǐn)?shù)據(jù)手冊PDF規(guī)格書

General description

FXLS8974CF is a compact 3-axis MEMS accelerometer designed for use in a wide

range of industrial and medical IOT applications that require ultra-low-power wake-up

on motion. The part supports both high-performance and low-power operating modes,

allowing maximum flexibility to meet the resolution and power needs for various unique

use cases. A number of advanced, integrated digital features enable designers to reduce

the overall system power consumption and simplify host data collection.

FXLS8974CF is available in a 2 mm x 2 mm x 0.95 mm 10-pin DFN package with 0.4

mm pitch and wettable flanks. The device is qualified to industrial standards over the

extended –40 °C to +105 °C temperature range. The combination of sensor performance,

system power-saving features, and extended over-temperature-range performance

makes FXLS8974CF an ideal accelerometer for motion sensing in the IOT.

Features and benefits

? ±2/4/8/16 g user-selectable, full-scale measurement ranges

? 12-bit acceleration data

? 8-bit temperature sensor data

? Low noise: 230 μg/√Hz in high performance mode

? Low-power capability:

– ≤ 1 μA IDD for ODRs up to 6.25 Hz

– < 4 μA IDD for ODRs up to 50 Hz

? Selectable ODRs up to 3200 Hz; Flexible Performance mode allows for custom ODRs

with programmable decimation (resolution) and idle-time settings

? 144 byte output data buffer (FIFO/LIFO) capable of storing up to 32 12-bit X/Y/Z data

triplets

? Flexible Sensor Data Change Detection (SDCD) function for realizing motion or no

motion, high-g/low-g, freefall, and other inertial events

? Autonomous orientation detection function (Portrait/Landscape/Up/Down)

? Dedicated low-power motion-detection mode with one wire interface option

? 12-bit vector magnitude calculation

? Trigger input for synchronizing data collection with an external system

? I2C interface frequencies up to 1 MHz; 3- and 4-wire SPI interface with clock

frequencies up to 4 MHz

? Bidirectional self-test diagnostic: Device motion or orientation does not impact the

result.

Applications

3.1 Industrial IOT

? Asset tracking

? Equipment monitoring

? Smart metering / tamper detection

? Surveillance

? Point of sale devices

? Indoor localization

3.2 Medical

? Patient activity monitors

? Drug delivery

? Clinical care

? Smart inhalers

3.3 Consumer devices

? Connected home

? Wearables

? Portable electronics

? Mobile accessories