KXTI9 Accelerometer 3x3x0.9mm Accelerometer with FIFO/FILO Buffer FEATURES Small Package - 3x3x0.9mm LGA User-selectable g Range User-selectable Output Data Rate Enhanced integrated Directional Tap/DoubleTapTM, Activity-monitoring, and Device-orientation Algorithms Digital I2C 8-bit or 12-bit Resolution FIFO/FILO Memory Buffer 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 APPLICATIONS User Interface Power Management Active/Inactive Monitoring Device Orientation Inclination and Tilt Sensing Gesture Recognition Tap Detection Pedometer/Activity Monitoring FOR Smartphones and Mobile Devices Laptops Gaming and Virtual Reality Health and Fitness PRODUCT OVERVIEW The Kionix KXTI9 is a low power, high performance tri-axis accelerometer with digital I2C output. The KXTI9 features user selectable parameters including 8 or 12 bit modes, g-ranges from +- 2, 4 or 8g, and Output Data Rates from 12.5 Hz to 800 Hz. A 252 byte FIFO/FILO buffer offers programmable watermark interrupt and provides a triggered low resolution or high resolution mode. Pin and register compatible with Kionix’ popular KXTF9, the KXTI9 features enhanced embedded Screen Rotation, Directional Tap/Double Tap, Orientation Detection and Low Power Motion Interrupt. The KXTI9 has internal voltage regulators that allow operation from 1.8 V to 3.6 V and is delivered in a 3x3x0.9mm, 10-pin, LGA package with an operating temperature range of -40°C to +85°C. KXTI9 Accelerometer 3x3x0.9mm Accelerometer with FIFO/FILO Buffer 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. PERFORMANCE SPECIFICATIONS PARAMETERS Range Sensitivity1 KXTI9-1001 CONDITION g ±2.0, ±4.0, ±8.0 User-selectable full-scale output range 64, 32, 16 8-bit counts/g 0g Offset vs. Temp Sensitivity vs. Temp Mechanical Resonance UNITS 2 Output Data Rate (ODR) 3 Bandwidth (-3dB)4 Non-Linearity Cross-axis Sensitivity 2 I C Communication Rate Power Supply Current Consumption 1024, 512, 256 12-bit mg/°C ±0.7 (xy) ±0.4 (z) typical -40°C to +85°C %/°C ±0.01 (xy) ±0.03 (z) typical -40°C to +85°C Hz 3500 (xy) 1800 (z) typical -3dB Hz 12.5 min; 800 max kHz 1.59 RES = 0 Hz ODR/2 RES = 1 % of FS 1.0 typical % of full scale output % 2.0 typical kHz 400 max V 2.6 typical 1.8V – 3.6V 325 typical RES = 1; Operating 165 typical RES = 0; ODR = 400Hz; Directional TapTM 100 typical RES = 0; ODR ≤ 25Hz; Low Power 10 typical Standby µA ENVIRONMENTAL SPECIFICATIONS PARAMETERS UNITS KXTI9-1001 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. Resonance as defined by the dampened mechanical sensor. 3 User selectable through I2C. 4 User selectable; dependent on ODR and 8-bit or 12-bit resolution. 2