KXTF9 Series
Accelerometers and Inclinometers
Ultra-Small Package - 3x3x0.9mm LGA
User-selectable G Range
User-selectable Output Data Rate
Directional Tap/Double-TapTM Detection Algorithm
Active/Inactive Detection Algorithm
Device-orientation Detection Algorithm
Digital I2C 8-bit or 12-bit Resolution
Digital High-Pass Filter Outputs
Low Power Consumption
Lead-free Solderability
Excellent Temperature Performance
High Shock Survivability
Factory Programmable Offset and Sensitivity
Self-test Function
FEATURES
“Kionix” is a registered trademark of Kionix, Inc. Products described herein are protected by patents issued or pending. Information provided
in this document is believed to be accurate and reliable but is not guaranteed. Kionix does not assume responsibility for its use or distribution.
No license is granted by implication or otherwise under any patent or other rights of Kionix. Kionix reserves the right to change product
specifications or discontinue this product at any time without prior notice.
© Kionix 2011 All Rights Reserved
March 22, 2011 Rev. 3
Page 1 of 2
These high-performance silicon micromachined linear accelerometers and incli-
nometers consist of a sensor element and an ASIC packaged in a 3x3x0.9mm
Land Grid Array (LGA). The sensor element is fabricated from single-crystal
silicon with proprietary Deep Reactive Ion Etching (DRIE) processes, and is
protected from the environment by a hermetically-sealed silicon cap at the
wafer level.
The KXTF9’s Directional Tap/Double-TapTM detection feature recognizes single-
tap and double-tap input and reports the acceleration axis and direction from
which each tap originated, enabling up to 12, user-defined, function com-
mands. Its active/inactive algorithm reports changes in a device’s motion
state, either moving (active) or not moving (inactive), and the orientation-
detection feature reports changes in landscape, portrait, face-up, and face-
down conditions. A highly-manufacturable product with consistent product
performance across use conditions, the KXTF9 operates across a supply volt-
age of 1.8V to 3.6V DC.
The sensor element functions on the principle of differential capacitance. Ac-
celeration causes displacement of a silicon structure resulting in a change in
capacitance. The sense element design utilizes common mode cancellation to
decrease errors from process variation and environmental stress. An ASIC,
using a standard CMOS manufacturing process, detects and transforms capaci-
tance changes into an analog voltage, which is proportional to acceleration.
Analog signals are further processed into digital signals and within embedded
digital algorithms. The device communicates to the system via I2C bus inter-
face.
PROPRIETARY TECHNOLOGY
36 Thornwood Dr. - Ithaca, NY 14850 USA tel: 607-257-1080 - fax: 607-257-1146 - www.kionix.com - info@kionix.com
MARKETS
APPLICATIONS
Static and Dynamic Acceleration
Activity Monitoring
Gesture Recognition
Personal Navigation Devices
E-Compass
Dead Reckoning
Mobile Phones and Mobile Internet Devices
Game Controllers and Computer Peripherals
Health Care and Fitness
Inclination and Tilt Sensing
User Interface
Power Management
Activity Monitoring
Gesture Recognition
User Interface
Gesture Recognition
Power Management
Active/Inactive Monitoring
PERFORMANCE SPECIFICATIONS
PARAMETERS UNITS KXTF9-4100 KXTF9-2050 CONDITION
Range g ±2.0, ±4.0, ±8.0 ±2.0, ±4.0, ±8.0 User-selectable full-scale
output range
Sensitivity 1 counts/g
64, 32, 16 64, 32, 16 (8-bit) Typical
1024, 512, 256 1024, 512, 256 (12-bit)Typical
Sensitivity vs. Temp %/°C ±0.01 (xy) ±0.03 (z) ±0.01 (xy) ±0.03 (z) Typical
0g Offset vs. Temp. mg/°C ±0.7 (xy) ±0.4 (z) ±0.7 (xy) ±0.4 (z) Typical
Mechanical Resonance 2 Hz 3500 (xy) 1800 (z) 3500 (xy) 1800 (z) -3dB (Typical)
Output Data Rate (ODR) 3 Hz 25 min; 800 max 25 min; 800 max
Bandwidth 4 Hz ODR/2 typical ODR/2 typical
Non-Linearity % of FS 1.0 typical 1.0 typical % of full scale output
Cross-axis Sensitivity % 2.0 typical 2.0 typical
I2C Communication Rate KHz 400 max 400 max
Power Supply V 1.8 typical 3.3 typical Factory programmable,
1.8V - 3.6V
Current Consumption
µA 230 typical 360 typical RES = 0; Operating
µA 570 typical 840 typical RES = 1; Operating
µA 0.1 typical 0.1 typical Standby
ENVIRONMENTAL SPECIFICATIONS
PARAMETERS UNITS KXTF9-4100 KXTF9-2050 CONDITION
Operating Temperature °C -40 to 85 -40 to 85 Powered
Storage Temperature °C -55 to 150 -55 to 150 Un-powered
Mechanical Shock g 5000, 0.5 msec 5000, 0.5 msec Powered or un-powered,
10,000, 0.2 msec 10,000, 0.2 msec halversine
ESD V 2000 Max Human body model 2000 Max
KXTF9 Series
Accelerometers and Inclinometers
PERFORMANCE SPECIFICATIONS
The performance parameters below are programmed and tested at 1.8 volts (KXTF9-4100) and 3.3V (KXTF9-
2050). However, the devices can be factory programmed to accept supply voltages from 1.8V to 3.6V. Perfor-
mance parameters will change with supply voltage variations.
ORDERING GUIDE
Product Output Axes of Sensi-
tivity
Range
(g) Sensitivity (counts/g) Offset
(counts)
Operating
Voltage (V)
Temperature
(°C) Package
KXTF9-1026 Digital I2C XYZ 2, 4, 8 64, 32, 16 (8-bit)
1024, 512, 256 (12-bit) 0 2.6 -40 to +85 3x3x0.9mm LGA
KXTF9-2050 Digital I2C XYZ 2, 4, 8 64, 32, 16 (8-bit)
1024, 512, 256 (12-bit) 0 3.3 -40 to +85 3x3x0.9mm LGA
KXTF9-4100 Digital I2C XYZ 2, 4, 8 64, 32, 16 (8-bit)
1024, 512, 256 (12-bit) 0 1.8 -40 to +85 3x3x0.9mm LGA
© Kionix 2011 All Rights Reserved
March 22, 2011 Rev. 3
Page 2 of 2
1 Resolution and acceleration ranges are user selectable via I2C.
2 Resonance as defined by the dampened mechanical sensor.
3 User selectable.
4 Dependent on ODR and 8-bit or 12-bit resolution.
