s e m i c o n d u c t o r s magnetoresistive angle sensors covering all the angles in automotive systems philips semiconductors magnetoresistive sensor technology is the superior choice for automotive measurement systems. features such as lack of wear, long term stability and direct measurement combine to deliver highly accurate and robust sensors. with stand-alone sensors, companion signal conditioning ics and complete single-package sensing solutions our range of cost-effective angle sensors covers all your application needs. offering many technical bene?ts over other technologies, philips magnetoresistive angle sensors provide car manufacturers with a more reliable and accurate solution for automotive angle measurement C reducing the risk of mechanical breakdowns and improving overall vehicle safety. this is an increasingly important area within automotive electronics as the industry moves closer to incorporating advanced x-by-wire networks and control systems, such as flexray, that rely on accurate measurement data. magnetoresistive (mr) sensors by their nature are ideal for the severe environmental conditions presented by automotive systems. based on the same, proven magnetoresistive technology used in automotive applications such as anti-lock braking systems, mr sensors provide direct angle measurement with long-term stability and wear-free operation. ?????????????? ???????????????? ? ? ? key bene?ts ? contactless angle measurement up to 180 ? measurement independent of magnetic drift caused by life time and temperature changes ? operation independent of mechanical tolerances and shifts of the magnet caused by thermal stress ? high temperature range ? automotive quali?cation ? highly ?exible solutions that measure any automotive angle effectively ? fully stable operation over long life-cycle key applications ? electronic throttle control (etc) ? variable valve control (vvc) ? pedal and wiper positioning ? active suspension ? automatic headlight adjustment ? electronic steering ? seat positioning
kmz41, kmz43t and x3t-kmz043 (bare die) key speci?cations magnetoresistive angle sensors kmz41 / 43 and uzz900x standalone mr sensor bridges for angular measurement philips kmz41 and kmz43 sensor bridges contain eight mr resistor networks etched into the same substrate, connected as two individual wheatstone bridges aligned at 45. possessing different sensitivities, our kmz41 and kmz43 angle sensors are designed to work with the uzz900x conditioning ics. ensuring maximum ?exibility, philips offers mr sensor bridges both as standalone devices in so8 package and as bare die for space-critical solutions. companion signal conditioning ics for sensor bridges designed and developed speci?cally to complement philips kmz family of angle sensors, the uzz9000 series provides optimized single-chip signal conditioning solutions with either analog or 13-bit spi interfacing. incorporating all conditioning electronics they also offer an adjustable measurement range and zero point to maximize design ?exibility. item uzz9000 uzz9001 supply voltage 5 v +/- 10 % 5 v +/- 10 % maximum angle range 0 - 180 0 - 180 angle range variation 0 - 30 ... 0 - 180 in steps of 10 ?xed to 0 - 180 zero point offset cancellation +/- 5 in steps of 0.5 ?xed to 0.0 output type ratiometric analog voltage digital (spi) with 13-bit resolution of measurements < 0.1 < 0.05 accuracy (ideal intput signals) < +/- 0.4 < +/- 0.30 package so24 (sot137-1) so24 (sot137-1) temperature range -40c to +150c -40c to +150c kmz41 kmz43t x3t-kmz043 operating voltage max. 9 v max. 9 v angle range 180 degree 180 degree output signal sin/cos sin/cos sensitivity typ. 2.8 mv/v typ. 2.35 mv/v saturation ?eld strength 100 ka/m 25 ka/m operating temperature range -40 ....+150 c -40 ....+150 c 14 bra159 kmz41 uzz9000 adc1 14 algorithm rc-oscilla t or & clock genera to r test and trim mode reset da c v out adjustment of output cur ve chara cteristic + v o1 - v o1 + v o2 - v o2 adc2 buffer buffer 13 13 two chip solution uzz9000 / uzz9001 key speci?cations kmz43t chip layout, showing the two separate bridges
magnetoresistive angle sensors kma200 single package angle sensor system with on-chip diagnostics the kma200 is a pre-aligned, ready-to-use sensor system. it consists of a magnetoresistive element containing two independent mr sensor bridges and a signal conditioning ic in a special multi-chip package. over voltage and reversed polarity protection are both incorporated into the device, as is temperature supervision. a self-monitoring function supervises the blocks of the sensor system during normal operation, automatically detecting failures in any part of the sensor system and quickly indicats such a diagnosis error to the connected higher-level system. user programmability is achieved via an spi with all data stored permanently in on-chip eeprom, allowing speci?c adjustments of the angular range, zero point and clamping level to be set. additionally, the device can be programmed to work either in analog or digital (spi) output modes. the magnetoresistive principle mr sensors use magnetic ?elds to conduct measurement information between physical value and sensor. this contactless principle allows isolation of all rotating components, making the entire sensing system robust with respect to pollution and mechanical degradation. another characteristic is that mr sensors evaluate the direction of the magnetic ?eld and not the ?eld strength: the ?eld strength is not important as long as it is above a certain operational minimum. as a result, mr-based systems using the kmz41 or kmz43t can tolerate variations in ?eld strength caused by ageing, mechanical ?uctuations or temperature sensitivity of the magnet. max. deviation from ideal line 1.65 degree at one point calibration linearity error step of 1 degree 0.1 degree repeatability 0.1 degree resolution of analog output signal 0.04 degree temperature drift of analog output 0.64max @ -25...+125c measurement update rate 4 khz ??????????????? ??????????????? ???????????????????? ???????????????????? ????????? ?????????? ??????????? ?????????? ???????????? ??????????? ? ??? ???????????????????????????????????????????????????????? analog output voltage with positive slope signal processing magneto resistive element angle sensor chip thin film technology the kma200 sensor system kma200 key speci?cations kma200 key features ? programmable angle range (max. 180) ? 4 analog and 2 digital output modes selectable ? 5 v supply ? ratiometric analog output ? reverse supply voltage protection up to 16.5 v ? over voltage protection up to 26.5 v ? over voltage maximum 32 v (for 400 ms) ? eeprom (user programmable) ? on-line diagnosis of all main functional blocks ? ambient temperature range C 40 c to + 160 c bra160 online dia gnosis eepr om/ ram input st ag e c output st ag e tempera ture sensor oscilla to r mr sensor signal conditioning electr onics kma200 single package solution
w w w. s e m i c o n d u c t o r s . p h i l i p s . c o m date of release : october 200 4 document order number: 9397 7 50 14132 published in the netherlands philips semiconductors philips semiconductors is a worldwide company with over 100 sales of?ces in more than 50 countries. for a complete up-to-date list of our sales of?ces please e-mail sales.addresses@www.semiconductors.philips.com. a complete list will be sent to you automatically. you can also visit our website http://www.semiconductors.philips.com/sales. ? koninklijke philips electronics n.v. 2004 all rights reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. magnetoresistive angle sensors covering all the angles in automotive systems portfolio overview type product package supply voltage (v) angle range output value output type operating temperatures c kmz41 sensor so8 5.0 ... 9 180 80 mv peak-peak sine / cosine -40 ... 150 kmz43 sensor so8 5.0 ... 9 180 68 mv peak-peak sine / cosine -40 ... 150 x3t-kmz043 sensor die 5.0 ... 9 180 68 mv peak-peak sine / cosine -40 ... 150 uzz9000 signal conditioning unit so24 4.5 ... 5.5 180 0.5 ... 4.5 v analog linear -40 ... 150 uzz9001 signal conditioning unit so24 4.5 ... 5.5 180 0.5 ... 4.5 v digital -40 ... 150 kma200 sensor system sot637 4.5 ... 5.5 180 0.5 ... 4.5 v 4 analog linear / -40 ... 160 2 digital
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