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Kionix, Inc. is a manufacturer of MEMS inertial sensors.[1] Headquartered in Ithaca, New York, United States, the company is a wholly owned subsidiary of ROHM Co., Ltd. of Japan. Kionix developed high-aspect-ratio silicon micromachining based on research originally conducted at Cornell University. The company offers inertial sensors, and development tools and application support to enable motion-based gaming; user-interface functionality in mobile handsets, personal navigation and TV remote controllers; and hard-disk-drive drop protection in mobile products. The company's MEMS products are also used in the automotive, industrial and health-care sectors. Kionix is ISO 9001:2008 and TS16949 registered.[2]


Founded in 1993, Kionix supplies silicon microelectromechanical systems (MEMS) accelerometer products.[3] Kionix introduced a tri-axis accelerometer in a small form-factor package.

In November, 2009, ROHM Co., Ltd. of Japan acquired Kionix.[4]


Kionix KXTF9: Tri-axis Digital Accelerometer. Size: 3x3x0.9mm

Kionix supplies MEMS devices including tri-axis accelerometers and gyroscopes along with the mixed-signal-interface integrated circuits that provide algorithm processing of sensor data. Its products and technologies include:

  • Accelerometers with one, two, or three axes; low-g or mid-g ranges
  • Angular rate sensors about the x, y, or z axis
  • Power management options and self-test features
  • Small form-factor, industry-standard packaging
  • Digital (I2C and SPI) interfaces and/or analog outputs
  • Programmable motion interrupts, temperature compensation, gain, offset, bandwidth
  • Embedded algorithms
  • Lead-free solderability and RoHS compliant[5]

Quality standards[edit]

Kionix achieved ISO registration in FY2000 and upgraded to ISO 9001:2000 in May 2003, and certified to ISO9001:2008 in April 2009.[6]

The company achieved ISO/TS 16949 registration in July 2005 and upgraded to ISO/TS16949:2009 in April, 2011.[6]

Manufacturing facilities[edit]

Kionix sensors are designed, manufactured, and tested at Kionix headquarters in Ithaca, NY. The ASICs used in Kionix accelerometers are designed in Ithaca, and fabricated elsewhere in the US. Wafers of sensor die and ASIC die are shipped from Ithaca to packaging houses in Asia, where the final product is created. At the packaging houses, the wafers of sensor die and ASIC die are diced into individual units, fastened one each to a lead frame, and wire-bonded together. Liquefied plastic is then squeezed into the frame and, once set, each part is cut from its construction housing. Lastly, the company logo and part number are silk-screened onto each part. Finished parts are returned to Ithaca for testing and programming.


Sales offices:[7]



Kionix provides financial support and gifts in kind to educational and access-to-education programs in Ithaca and the surrounding communities. Recipients include:[9]


  1. ^ Sales Offices Archived 2011-08-18 at the Wayback Machine. Kionix.
  2. ^ "Kionix Introduces New Accelerometers Optimized for Mobile Handsets and Tablets." Archived 2013-08-01 at the Wayback Machine. Kionix. June 7, 2011.
  3. ^ Eloy, JC. "MEMS industry evolution: from devices to function." Archived 2012-03-30 at the Wayback Machine. Yole Developpement. 2010.
  4. ^ Happich, Julien. "Kionix to become a wholly owned subsidiary of Rohm.". EETimes. October 13, 2009.
  5. ^ Accelerometer Product Catalog. Kionix. Accessed July 28, 2011.
  6. ^ a b Kionix Quality System. Kionix. Accessed July 28, 2011.
  7. ^ "Archived copy". Archived from the original on 2011-08-18. Retrieved 2011-08-18.CS1 maint: archived copy as title (link). Kionix. Accessed July 26, 2011.
  8. ^ [1]. Kionix. Accessed July 26, 2011.
  9. ^ [2]. Kionix. Accessed July 30, 2011.