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 Cell Phones and Handheld PDAs Gaming and Game Controllers Gesture Recognition Universal Remote Controls Inclination and Tilt Sensing Theft and Accident Alarms Image Stabilization GPS Recognition Assist Sports Diagnostics Hard-drive Protection Vibration Analysis Pedometers Static or Dynamic Acceleration Computer Peripherals Inertial Navigation and Ded(uctive) Reckoning 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 Precision in Motion Cameras and Video Equipment 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. 36 Thornwood Dr. - Ithaca, NY 14850 USA tel: 607-257-1080 - fax: 607-257-1146 - www.kionix.com - [email protected] “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 2006 April 27, 2006 Page 1 of 3 Rev 0.5 KXPA4 Series Data Sheet PRODUCT SPECIFICATIONS PERFORMANCE SPECIFICATIONS PARAMETERS Range 2 UNITS KXPA4–1050 KXPA4–2050 mV/g 0g Offset vs. Temp. Sensitivity vs. Temp mg Hz 5 Non-Linearity Ratiometric Error Cross-axis Sensitivity Power Supply PARAMETERS Over temp range 3 ±2.0 max mV Output Resistance 660 % µ g / Hz 4 560 ±150 (x and y) ±300 (z) -40 to 85 Noise Bandwidth Factory programmable °C Span CONDITION ±2.0 g Sensitivity 1 ±1120 Over temp range ±1320 175 typical 0 to 3300 max (x and y) -3dB 0 to 1700 max (z) Ω 32K typical % of FS % 0.1 typical (0.5 max) ±0.4 typical (±1.5 max) % ±2.0 typical (±3.0 max) V 2.8 1 3.3 V -0.3 (min) 7.0 (max) mA 1.1 typical µA <10 ms 1.6 1 Absolute min/max Shutdown pin connected to GND Power-up time @ 500 Hz ENVIRONMENTAL SPECIFICATIONS UNITS KXPA4 Series 7 6 CONDITION Operating Temperature °C -40 to 85 Storage Temperature °C -55 to 150 Unpowered Powered Mechanical Shock g 4600 Powered or unpowered, 0.5 msec halversine ESD V 3000 Human body model 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. 2 Custom ranges from 1.5g to 6g available. 3 Temperature range for specified offset. 4 Lower bandwidth can be achieved by using the external C2 , C3 , and C4 (see application note on page 3). 5 32K Ω 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 Ω will prevent appreciable changes. 6 The power-up time will increase or decrease according to bandwidth (5RC). 7 0g offset and sensitivity change linearly with temperature. CAUTION: ELECTROSTATIC SENSITIVE COMPONENT © Kionix 2006 April 27, 2006 Page 2 of 3 Rev 0.5 KXPA4 Series Data Sheet APPLICATION SCHEMATIC & PIN FUNCTION TABLES Pin Tri-Axis Function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 DNC DNC Vdd GND X Output Z Output Y Output PS Self Test S1 S0 Vmux DNC DNC 1 14 2 13 3 12 Vdd 4 C1 C2 C3 KXPA4 Vmux 11 5 10 6 9 7 8 S0 S1 ST PS C4 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 X Output – Analog X output Vdd – Power supply Y Output – Analog Y output Vmux — Multiplexed analog output Z Output – Analog Z 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 µF for decoupling capacitor C1. FUNCTIONAL DIAGRAM 5x5x1.2mm DFN PACKAGE F A G Output X 32K X Sensor 5 +Y C2 Z Sensor Charge Amplifier 32K Self Test 9 Vdd B +X 6 H D C3 Y Sensor E Output Z +Z Output Y 32K 7 Dimension Inches C4 Oscillator +Z C 3 +X GND 4 Logic MUX 8 11 10 Notes: 12 S0 S1Vmux PS 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 .197 5.00 B .197 5.00 C .047 1.20 D .009 0.23 E .020 0.50 F G H .016 .142 .142 0.40 3.60 3.60 Axis(es) of Sensitivity Range Sensitivity (mV/g) Offset (V) Operating Voltage (V) Temperature Package KXPA4-1050 XYZ 2g 560 1.40 2.8 -40 to +85 °C 5x5x1.2mm DFN KXPA4-2050 XYZ 2g 660 1.65 3.3 -40 to +85 °C 5x5x1.2mm DFN Product CAUTION: ELECTROSTATIC SENSITIVE COMPONENT Millimeters A © Kionix 2006 April 27, 2006 Page 3 of 3 Rev 0.5