NXP Semiconductors FXLS8974CF 12-Bit Digital IoT Accelerometer

NXP Semiconductors FXLS8974CF 12-Bit Digital IoT Accelerometer is a compact 3-axis MEMS accelerometer designed for a wide range of medical and industrial IoT applications that require ultra-low power wake-up on motion. The part supports high-performance and low-power operating modes, allowing maximum flexibility to meet various unique use cases' resolution and power needs.

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

  • ±2/4/8/16g user-selectable, full-scale measurement ranges
  • 12-bit acceleration data
  • 8-bit temperature sensor data
  • Low noise: 230µg/√Hz in high-performance mode
  • Low-power capability
    • ≤ 1μA IDD for ODRs up to 6.25Hz
    • < 4µA IDD for ODRs up to 50Hz
  • Selectable ODRs up to 3200Hz; 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 1MHz; 3- and 4-wire SPI interface with clock frequencies up to 4MHz
  • Bidirectional self-test diagnostic: Device motion or orientation does not impact the result

Applications

  • Industrial IoT
    • Asset tracking
    • Equipment monitoring
    • Smart metering/tamper detection
    • Surveillance
    • Point of sale devices
    • Indoor localization
  • Wearables
    • Portable electronics
    • Mobile accessories
  • Medical
    • Patient activity monitors
    • Drug delivery
    • Clinical care
    • Smart inhalers
    • Consumer devices
    • Connected home
       

Videos

Block Diagram

Block Diagram - NXP Semiconductors FXLS8974CF 12-Bit Digital IoT Accelerometer
Published: 2022-07-13 | Updated: 2025-10-31