Content
  • Product Description

    BMA423

    The BMA423 is an ultra-small, triaxial, low-g acceleration sensor with digital interfaces, aiming for low-power consumer electronics applications. Featuring 12 bit digital resolution and embedded intelligence, the BMA423 allows low-noise measurement of accelerations in 3 perpendicular and thus senses wrist tilt, tab/double tab and enables plug ’n’ play step counting especially in wearable devices.

    Applications

    - Step-counting in wearable devices

    - Wake up display on wrist tilt

    - Low power user interaction by tab/double tab

    - Advanced gesture recognition

    - Activity recognition/tracking

    - Advanced power management for mobile devices

    - Tilt compensation for electronic compass

     
     

    Mobile Applications

    A wristband personal alarm clock will make sure that not only will you get up on time but also in sync with your natural biorhythm. A smartwatch can improve your health by detecting poor air quality in your environment. Smart fitness wear can improve the efficiency of your workout by measuring your speed and calorie consumption. What do all these wearable applications have in common? They are made possible by the almost invisible MEMS sensors and clever sensor solutions.

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    Other sensors in the same category

     

    BMA421

    The BMA421 is an small acceleration sensor with a footprint of 2 x 2mm² and a 12 bit digital resolution.

    BMA456

    The BMA456 is an ultra-small, low-g acceleration sensor with 16 bit digital resolution for wearable devices.

    BMA222E

    The BMA222E is an small acceleration sensor with a footprint of 2 x 2mm² and a 8 bit digital resolution.

    BMA250E

    The BMA250E with its 2 x 2 mm² footprint and a 10 bit digital resolution allows low-noise measurement of accelerations in 3 perpendicular axes.

     

    BMA255

    With its small footprint of only 2 x 2mm² the BMA255 is unique in the class of low-noise, 12 bit digital acceleration sensors.

    BMA253

    The ultra-small package of only 2 x 2mm² and the interfaces of the BMA253 have been defined to match a multitude of hardware requirements.

    BMA456

    The BMA456 is an ultra-small, low-g acceleration sensor with 16 bit digital resolution for wearable devices.

    BMA422

    The BMA422 is an ultra-small, low-g acceleration sensor with 12 bit digital resolution for wearable devices.

     

    BMA455

    With its embedded intelligence BMA455 is unique in the class of consumer grade accelerometers for smartphones, wearable devices and toys and gadgets.

    BMA280

    The BMA280 is an advanced, triaxial, low-g acceleration sensor with digital interfaces, aiming for low-power consumer electronics applications. The sensor has a footprint of 2 x 2mm² and a 14 bit digital resolution.

     
  • Technical data
    Parameter Technical data
    Digital resolution 12 bit
    Resolution
    (in ±2g range)
    0.98 mg
    Measurement ranges
    (programmable)
    ±2 g, ±4 g, ±8 g, ±16 g
    Sensitivity (calibrated) ±2 g: 1024 LSB/g
    ±4 g: 512 LSB/g
    ±8 g: 256 LSB/g
    ±16 g: 128 LSB/g
    Zero-g offset (typ., over life-time) ±80 mg
    Noise density (typ.) 140 µg/vHz
    Bandwidths (programmable) 1600 Hz ... 1.5 Hz
    Digital inputs/outputs SPI & I2C,
    2x digital interrupt pins
    Supply voltage (VDD) 1.62 … 3.6 V
    I/0 supply voltage (VDDIO) 1.2 … 3.6 V
    Temperature range -40 … +85°C
    Current consumption
    - full operation
    - low-power mode
    150 μA
    13 μA (at 50Hz data rate)
    FIFO data buffer 1 kB
    LGA package 2 x 2 x 0.95 mm³
    Shock resistance 10,000 g x 200 µs
     
     
  • Documents & drivers
    Type of document Download
    Flyer BST-BMA423-FL000-00
    Datasheet BST-BMA423-DS000-00
    Handling & Soldering instructions BST-MAS-HS000-05