General description

FXLS8471Q is a small, low-power, 3-axis, linear accelerometer in a

3 mm x 3 mm x 1 mm QFN package. FXLS8471Q has dynamically selectable

acceleration full-scale ranges of ±2 g/±4 g/±8 g and 14 bits of resolution. Output data

rates (ODR) are programmable from 1.563 Hz to 800 Hz. I2C and SPI serial digital

interfaces are provided along with several user programmable event detection functions

that can be used to reduce the overall system power consumption by off-loading the host

processor. FXLS8471Q is guaranteed to operate over the extended temperature range of

–40 °C to +105 °C.

Features and benefits

• 1.95 V to 3.6 V VDD supply voltage, 1.62 V to 3.6 V VDDIO voltage

• ±2 g/±4 g/±8 g dynamically selectable acceleration full-scale ranges

• Output Data Rates (ODR) from 1.563 Hz to 800 Hz

• Low noise: typically 99 μg/Hz in low-noise mode @ 200-Hz bandwidth

• 14-bit ADC resolution: 0.244 mg/LSB in ±2 g full-scale range

• Embedded programmable acceleration event functions

– Freefall and motion detection

– Transient detection

– Vector-Magnitude change detection

– Pulse and tap detection (single and double)

– Orientation detection (portrait/landscape)

• Programmable automatic ODR change using Auto-Wake and return to Sleep functions

to save power

• 192-byte FIFO buffer, capable of storing up to 32 samples of X/Y/Z data

• Supports SPI interface at up to 1 MHz; I2C Normal (100 kHz) and Fast modes

(400 kHz)

• Integrated self-test function

• Integrated temperature sensor with 8-bit output resolution

Typical applications

Automotive convenience and security

• Tilt sensing, orientation detection, vibration sensing

• Navigation applications

Industrial IOT

• Asset tracking

• Equipment monitoring: vibration analysis, machine health

Medical

• Patient and activity monitors

Consumer devices

• Wearables

• Portable electronics