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| KXPA4 Series Data Sheet Accelerometers and Inclinometers Multiplexed Analog Output KXPA4-1050 -- Tri-Axis XYZ, 2.8V KXPA4-2050 -- Tri-Axis XYZ, 3.3V APPLICATIONS Drop Detection Gesture Recognition Inclination and Tilt Sensing Image Stabilization Sports Diagnostics Vibration Analysis Static or Dynamic Acceleration Inertial Navigation and Ded(uctive) Reckoning Cell Phones and Handheld PDAs Gaming and Game Controllers Universal Remote Controls Theft and Accident Alarms GPS Recognition Assist Hard-drive Protection Pedometers Computer Peripherals Cameras and Video Equipment FEATURES Ultra-Small Package -- 5x5x1.2mm DFN Precision Tri-axis Orthogonal Alignment Multiplexed Analog Output High Shock Survivability Excellent Temperature Performance Low Noise Density Very Low Power Consumption Selectable Power Reduction Modes User Definable Bandwidth Factory Programmable Offset and Sensitivity Self-test Function PROPRIETARY TECHNOLOGY These high-performance silicon micromachined linear accelerometers and inclinometers consists of a sensor element and an ASIC packaged in a 5x5x1.2mm Dual Flat No-lead (DFN). 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 wafer at the wafer level. The KXPA4 series is designed to provide a high signal-tonoise ratio with excellent performance over temperature. These sensors can accept supply voltages between 2.7V and 5.25V. Sensitivity is factory programmable allowing customization for applications requiring 1.5g to 6.0g ranges. Sensor bandwidth is user-definable. The sensor element functions on the principle of differential capacitance. Acceleration causes displacement of a silicon structure resulting in a change in capacitance. An ASIC, using a standard CMOS manufacturing process, detects and transforms changes in capacitance into an analog output voltage, which is proportional to acceleration. The analog output is also accessed through an on-board 3 channel multiplexor. The sense element design utilizes common mode cancellation to decrease errors from process variation and environmental stress. Precision in Motion 36 Thornwood Dr. - Ithaca, NY 14850 USA tel: 607-257-1080 - fax: 607-257-1146 - www.kionix.com - info@kionix.com "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. (c) Kionix 2006 April 27, 2006 Page 1 of 3 Rev 0.5 KXPA4 Series Data Sheet PRODUCT SPECIFICATIONS PERFORMANCE SPECIFICATIONS PARAMETERS Range 2 1 UNITS KXPA4-1050 KXPA4-2050 g mV/g mg C % mV 1120 175 typical 0 to 3300 max (x and y) 0 to 1700 max (z) 32K typical 0.1 typical (0.5 max) 0.4 typical (1.5 max) 2.0 typical (3.0 max) 2.8 1 CONDITION Factory programmable 2.0 560 -40 to 85 3 Sensitivity 0g Offset vs. Temp. Sensitivity vs. Temp Span Noise Bandwidth 4 660 Over temp range Over temp range 1320 150 (x and y) 300 (z) 2.0 max g / Hz Hz 5 -3dB Output Resistance Non-Linearity Ratiometric Error % of FS % % V V Cross-axis Sensitivity 3.3 1.1 typical <10 1.6 1 -0.3 (min) 7.0 (max) Absolute min/max Shutdown pin connected to GND Power-up time @ 500 Hz 6 Power Supply mA A ms PARAMETERS Operating Temperature Storage Temperature Mechanical Shock ESD ENVIRONMENTAL SPECIFICATIONS UNITS KXPA4 Series C C g V -40 to 85 7 CONDITION Powered Unpowered Powered or unpowered, 0.5 msec halversine Human body model -55 to 150 4600 3000 Notes 1 The performance parameters are programmed and tested at 2.8 volts (KXPA4-1050) and 3.3V (KXPA4-2050). However, the device can be factory programmed to accept supply voltages from 2.7 V to 5.25 V. Operation at reduced supply voltages, down to 2.6 V, can be achieved by narrowing the operating temperature range. Performance parameters will change with supply voltage variations. Custom ranges from 1.5g to 6g available. Temperature range for specified offset. Lower bandwidth can be achieved by using the external C2 , C3 , and C4 (see application note on page 3). 32K resistor connects the output amplifier to the output pin. Resistive loading may reduce sensitivity or cause a shift in offset. Maintaining a load resistance at 3.2M will prevent appreciable changes. The power-up time will increase or decrease according to bandwidth (5RC). 0g offset and sensitivity change linearly with temperature. 2 3 4 5 6 7 CAUTION: ELECTROSTATIC SENSITIVE COMPONENT (c) Kionix 2006 April 27, 2006 Page 2 of 3 Rev 0.5 KXPA4 Series Data Sheet APPLICATION SCHEMATIC & PIN FUNCTION TABLES Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Tri-Axis Function DNC DNC Vdd GND X Output Z Output Y Output PS Self Test S1 S0 Vmux DNC DNC 1 2 3 Vdd C1 4 5 6 7 C2 C3 C4 14 13 12 Vmux S0 S1 ST PS KXPA4 11 10 9 8 KXPA4 Pin Descriptions GND - Ground PS -- Power shutdown pin. When the PS pin is connected to GND or left floating, the KXPA4 is shutdown and drawing very little power. When the PS pin is tied to Vdd, the unit is fully functional. Self Test -- The output of a properly functioning part will increase when Vdd is applied to the self-test pin. When NOT in use, this pin must be tied to ground. SO -- MUX select S1 -- MUX select Vdd - Power supply Vmux -- Multiplexed analog output Application Design Equations The bandwidth is determined by the filter capacitors connected from pins 3, 4 and 5 to ground. The response is single pole. Given a desired bandwidth, fBW, the filter capacitors are determined by: 4 . 97 x10 - 6 C2 = C3 = C4 = f BW Notes 1. Recommend using 0.1 F for decoupling capacitor C1. X Output - Analog X output Y Output - Analog Y output Z Output - Analog Z output FUNCTIONAL DIAGRAM A 32K 5x5x1.2mm DFN PACKAGE F G Output X 5 X Sensor C2 Z Sensor Charge Amplifier 32K +Y B H D +Z E +X Output Z 6 C3 Y Sensor Self Test 9 Vdd 3 Logic MUX 32K Output Y 7 Oscillator C4 Dimension Inches +Z C +X Millimeters 5.00 5.00 1.20 0.23 0.50 0.40 3.60 3.60 A B C .197 .197 .047 .009 .020 .016 .142 .142 GND 4 Notes: 12 D E F G H 8 11 10 PS S0 S1Vmux 1. When device is accelerated in +X, +Y or +Z direction, the corresponding output will increase. 2. The packaged device weighs .079 grams. ORDERING GUIDE Product KXPA4-1050 KXPA4-2050 CAUTION: ELECTROSTATIC SENSITIVE COMPONENT Axis(es) of Sensitivity XYZ XYZ Range 2g 2g Sensitivity (mV/g) 560 660 Offset (V) 1.40 1.65 Operating Voltage (V) 2.8 3.3 Temperature -40 to +85 C -40 to +85 C Package 5x5x1.2mm DFN 5x5x1.2mm DFN (c) Kionix 2006 April 27, 2006 Page 3 of 3 Rev 0.5 |
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