april 27, 2006 ? kionix 2006 rev 0.5 page 1 of 3 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 ?kionix? is a registered trademark of kionix, inc. products described herein are protected by patents issued or pending. infor mation 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. 36 thornwood dr. - ithaca, ny 14850 usa tel: 607 - 257 - 1080 - fax: 607 - 257 - 1146 - www.kionix.com - info@kionix.com drop detection gesture recognition inclination and tilt sensing image stabilization sports diagnostics vibration analysis static or dynamic acceleration inertial navigation and ded(uctive) reckoning KXPA4 series data sheet accelerometers and inclinometers multiplexed analog output KXPA4 - 1050 ? tri - axis xyz, 2.8v KXPA4 - 2050 ? tri - axis xyz, 3.3v p recision in motion 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 these high - performance silicon micromachined linear accelerometers and inclinometers consist s of a sensor element and an asic packaged in a 5x5x1.2mm dual flat no - lead (dfn). the sensor elemen t 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 - to - noise 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 displace- ment of a silicon structure resulting in a change in ca- pacitance. an asic, using a standard cmos manufactur- ing process, detects and transforms changes in capaci- tance 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. applications features proprietary technolo gy
april 27, 2006 ? kionix 2006 rev 0.5 page 2 of 3 KXPA4 series data sheet parameters units KXPA4 ? 1050 KXPA4 ? 2050 condition range 2 g 2.0 factory programmable sensitivity mv/g 560 660 0g offset vs. temp. mg 150 (x and y) 300 (z) over temp range c - 40 to 85 3 sensitivity vs. temp % 2.0 max over temp range span mv 1120 1320 noise 175 typical bandwidth 4 hz 0 to 3300 max (x and y) - 3db 0 to 1700 max (z) output resistance 5 w 32k typical non - linearity % of fs 0.1 typical (0.5 max) ratiometric error % 0.4 typical (1.5 max) cross - axis sensitivity % 2.0 typical (3.0 max) power supply v 2.8 1 3.3 1 v - 0.3 (min) 7.0 (max) absolute min/max ma 1.1 typical a <10 shutdown pin connected to gnd ms 1.6 power - up time @ 500 hz 6 environmental specifications parameters units KXPA4 series condition operating temperature c - 40 to 85 7 powered storage temperature c - 55 to 150 unpowered mechanical shock g 4600 powered or unpowered, 0.5 msec halversine esd v 3000 human body model performance specifications 1 product specificatio ns 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 c 2 , c 3 , and c 4 (see application note on page 3). 5 32k w 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 w 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 compo- nent hz g / m
april 27, 2006 ? kionix 2006 rev 0.5 page 3 of 3 caution: electrostatic sensitive compo- nent KXPA4 series data sheet application schemati c & pin function tables 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, f bw , the filter capacitors are determined by: notes 1. recommend using 0.1 f for decoupling capacitor c 1 . bw f x c c c 6 4 3 2 10 97 . 4 - = = = dimension inches millimeters a .197 5.00 b .197 5.00 c .047 1.20 d .009 0.23 e .020 0.50 f .016 0.40 g .142 3.60 h .142 3.60 +y +x +z +z +x a b c d e f g h functional diagram 5x5x1.2mm dfn package product 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 pin tri - axis function 1 dnc 2 dnc 3 vdd 4 gnd 5 x output 6 z output 7 y output 8 ps 9 self test 10 s1 11 s0 12 vmux 13 dnc 14 dnc x output ? analog x output y output ? analog y output z output ? analog z output c 2 c 3 32k x sensor oscillator 9 5 self test output x ps vdd gnd 4 3 z sensor charge amplifier 32k output z 6 y sensor 32k output y 7 8 logic c 4 mux 11 10 12 s0 s1 vmux ordering guide 14 13 12 11 10 9 8 1 2 3 4 5 6 7 KXPA4 vmux s0 s1 st ps c 2 c 3 c 1 c 4 vdd notes: 1. when device is accelerated in +x, +y or +z direction, the corresponding output will increase. 2. the packaged device weighs .079 grams.
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