KXCJ9 Accelerometer
3x3x0.9mm Low-Power Accelerometer
FEATURES
Small Package - 3x3x0.9mm LGA
User-selectable g Range and Output Data
Rate
8-bit, 12-bit, and 14-bit Resolution
Low Power Consumption
Internal Voltage Regulator
User-configurable Wake-up Function
Digital I2C
Lead-free Solderability
Excellent Temperature Performance
High Shock Survivability
Factory Programmable Offset and Sensitivity
Self-test Function
APPLICATIONS
User Interface
Power Management
Active/Inactive Monitoring
Device Orientation
Inclination and Tilt Sensing
Gesture Recognition
Pedometer/Activity Monitoring
FOR
Smartphones and Mobile Devices
Laptops
Gaming and Virtual Reality
Health and Fitness
PRODUCT OVERVIEW
The KXCJ9 is a high-performance, ultra-low-power, tri-axis
accelerometer designed for mobile applications. It offers our
best power performance along with an embedded wake-up
feature, Fast-mode I2C and up to 14-bit resolution. The KXCJ9
is delivered in a 3 x 3 x 0.9 mm, 10-pin, LGA package with an
operating temperature range of -40°C to +85°C.
The KXCJ9 sensor offers improved shock, reflow, and
temperature performance, and the ASIC has internal voltage
regulators that allow operation from 1.8 V to 3.6 V within the
specified product performance. Pin compatible with KXTI9 and
KXTF9.
PERFORMANCE SPECIFICATIONS
PARAMETERS
UNITS
KXCJ9-1008
CONDITION
Range
g
±2.0, ±4.0, ±8.0
User-selectable full-scale output range
Sensitivity1
counts/g
64, 32, 16
8-bit
1024, 512, 256
12-bit
1024 typical
14-bit2
0g Offset vs. Temp
mg/°C
0.2
-40°C to +85°C
Sensitivity vs. Temp
%/°C
±0.01 (xy) ±0.03 (z) typical
-40°C to +85°C
Mechanical Resonance3
Hz
3500 (xy) 1800 (z) typical
-3dB
Output Data Rate (ODR)4
Hz
0.781 min; 50 typical; 1600 max
Bandwidth (-3dB)5
Hz
800
RES = 0
ODR/2
RES = 1
Non-Linearity
% of FS
1.0 typical
% of full scale output
Cross-axis Sensitivity
%
2.0 typical
I2C Communication Rate
MHz
3.4 max
Power Supply
V
2.6 typical
1.8V – 3.6V
Current Consumption6
µA
135 typical
High resolution (RES = 1)
10 typical
Low resolution (RES = 0)
2 typical
Standby
ENVIRONMENTAL SPECIFICATIONS
PARAMETERS
UNITS
KXCJ9-1008
CONDITION
Operating Temperature
°C
-40 to 85
Powered
Storage Temperature
°C
-55 to 150
Un-powered
Mechanical Shock
g
5,000, 0.5 ms
10,000, 0.2 ms
Powered or un-powered,
halversine
ESD
V
2,000
Human body model
NOTES
1 Resolution and acceleration ranges are user selectable via I2C.
2 14-bit Resolution is only available for registers 0x06h – 0x0Bh in the 8g Full Power mode.
3 Resonance as defined by the dampened mechanical sensor.
4 User selectable through I2C.
5 User selectable; dependent on ODR and RES.
6 Current varies with Output Data Rate (ODR).
The performance parameters below are programmed and tested at 2.6 volts and T = 25°C. The device can accept supply voltages from 1.8V to
3.6V. Due to internal voltage regulators, there should be minimal change with supply voltage variations.
KXCJ9 Accelerometer
3x3x0.9mm Low-Power Accelerometer
