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KX124-1051
Tri-Axis, User Selectable ± 2g, 4g, 8g, Digital (I²C/SPI) Output, Integrated FIFO/FILO buffer, 3x3x0.9mm LGA - KX124-1051

The KX124-1051 is a tri-axis +/-2g, +/-4g or +/-8g silicon micromachined accelerometer with integrated 2048 byte buffer, orientation, tap/double tap, activity detecting, and Free fall algorithms. The sense element is fabricated using Kionix’s proprietary plasma micromachining process technology. Acceleration sensing is based on the principle of a differential capacitance arising from acceleration-induced motion of the sense element, which further utilizes common mode cancellation to decrease errors from process variation, temperature, and environmental stress. The sense element is hermetically sealed at the wafer level by bonding a second silicon lid wafer to the device using a glass frit. A separate ASIC device packaged with the sense element provides signal conditioning, and intelligent user-programmable application algorithms. The accelerometer is delivered in a 3 x 3 x 0.9 mm LGA plastic package operating from a 1.71 – 3.6V DC supply. Voltage regulators are used to maintain constant internal operating voltages over the range of input supply voltages. This results in stable operating characteristics over the range of input supply voltages. I²C or SPI digital protocol is used to communicate with the chip to configure and check for updates to the orientation, Directional TapTM detection, Free fall detection and activity monitoring algorithms. With user-selectable I²C address assignment, as many as 4 accelerometers can be placed on the same I²C serial bus when two KX124-1051 accelerometers are used in conjunction with two KX124-1050 accelerometers.

Highlights

  • Small Footprint
  • Extra large embedded 2048 byte FIFO/FILO buffer
  • Digital High-Pass Filter Outputs
  • Enhanced integrated Free fall, Directional Tap/Double-Tap™, and Device-orientation Algorithms
  • User-selectable Output Data Rate up to 25600Hz
  • User-configurable wake-up function
  • Excellent Temperature Performance
  • High Shock Survivability

Product Specifications

Axis G Range Sensitivity Noise (µg/√Hz) Resolution Package Size Pins Package Type Interface Output Wakeup Operating Temperature (Min.)[°C] Operating Temperature (Max.)[°C] Supply Voltage [V] Current Consumption
3 2g, 4g, 8g, User-selectable 16384, 8192, 4096 (16-bit), (counts/g) 130 8-bit, 16-bit 3x3x0.9mm 16-pin LGA Digital SPI/I²C Yes -40 85 1.71-3.6 10-145 μA

EVALUATION BOARDS

PART NUMBER BUY NOW DESCRIPTION DOCUMENTATION
KX124-1051-EVB0B0 Cart KX124-1051 Evaluation Board Board Schematic
Board Layout

Developer Tools

Buy Now Description
IoT Evaluation and Development Kit Cart Kionix's IoT evaluation kit utilizes hardware platform based on Nordic Semiconductor's Bluetooth LE SoC. The compact (27/32mm x 4.2mm), highly integrated modular sensor system integrates Kionix's accelerometer (KX122-1037), combo accel-mag (KMX62-1031), and combo accel-gyro (KXG07) sensors along with ROHM's barometric pressure sensor (BM1383AGLV). Additional sensors can be evaluated using the add-on board that can fit inside the kit. This enables measurement of 3D acceleration, 3D magnetism, 3D rotation, air pressure, and temperature, making it ideal for training, prototyping, and initial set development of IoT and wearable applications.