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KX122-1037
Tri-Axis, User Selectable ± 2g, 4g, 8g, Digital (I2C/SPI) Output, Integrated FIFO/FILO buffer, 2x2x0.9mm LGA - KX122-1037

The KX122-1037 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 2 x 2 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.

FEATURES:

  • 2x2x0.9mm LGA
  • User-selectable g Range and Output Data Rate
  • User-selectable low power or high resolution mode
  • Digital High-Pass Filter Outputs
  • Embedded 2048 byte FIFO/FILO buffer
  • Internal voltage regulator to maintain constant internal operating voltages throughout the 1.71 - 3.6V input supply range
  • Low Power Consumption with FlexSet™ Performance Optimization
  • Internal voltage regulator
  • Enhanced integrated Free fall, Directional Tap/Double-TapTM, and Device-orientation Algorithms
  • User-configurable wake-up function
  • Digital I2C up to 3.4MHz
  • Digital SPI up to 10MHz
  • Lead-free Solderability
  • Excellent Temperature Performance
  • High Shock Survivability
  • Factory Programmed Offset and Sensitivity
  • Self-test Function

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) 100 8-bit, 16-bit 2x2x0.9mm 12-pin LGA Digital SPI/I²C Yes -40 85 1.71-3.6 10-145 μA

EVALUATION BOARDS

PART NUMBER BUY NOW DESCRIPTION DOCUMENTATION
EVAL-KX122-1037 Cart KX122-1037 Evaluation Board Board Layout
Board Schematic

Developer Tools

Buy Now Description
USBDEVKIT Cart This Kit is composed of a Kionix Evaluation Board on which is soldered a customer-specified 3.3V Kionix accelerometer product, a Silicon Labs C8051F340DK that provides the microprocessor control and USB interface, and a Kionix F340 Adapter Board that provides the link between the Kionix Evaluation Board and the microprocessor.