the analog mixed signal company zmd31035 automotive sensor signal conditioner preliminary benefits no external trimming components required pc-controlled configuration and calibration via one-wire interface ?simple, low cost high accuracy (?.1% fso @ -25 to 85?; ?.25% fso @ -40 to 125?) brief description the zmd31035 is a cmos integrated circuit for highly- accurate amplification and sensor-specific correction of bridge sensor signals. digital compensation of sensor offset, sensitivity, temperature drift and non-linearity is accomplished via a 16-bit risc micro-controller running a correction algorithm with calibration coefficients stored in a non-volatile eeprom. the zmd31035 is adjustable to nearly all piezo-resistive bridge sensors. measured values are provided at the analog voltage output or at the one-wire-interface. the digital one-wire-interface can be used for a simple pc-controlled calibration procedure, in order to program a set of calibration coefficients into an on-chip eeprom. thus a specific sensor and a zmd31035 are mated digi- tally: fast, precise and without the cost overhead associ- ated with trimming by external devices or laser. the zmd31035 is optimized for automotive environ- ments by it s protection circuitry and excellent electro- magnetic compatibility. ? evaluation kit will be available, containing pcbs, ssop14 samples, software, documentation ? support for industrial mass calibration available ? quick circuit customization possible for large production volumes vddb vtn vbn vssb aout vbp vsse vssa vssa vss vdde vdd clk di v out owi gnd supply 100n 15n 100n 100n zmd31035 vdda 4.5...5.5v bridge sensor temp. sensing diode features ? digital compensation of sensor offset, sensitivity, temperature drift and non-linearity ? adjustable to nearly all piezo-resistive bridge sensors types ? digital one-shot calibration: quick and precise ? selectable temperature compensation reference: internal or external diode ? output options: analog voltage (0 to 5v) or one-wire-interface (lin compatible protocol) ? digital sensor calibration via one-wire-interface ? sampling rate typically 125hz ? high voltage protection ? reverse polarity and short circuit protection ? operation temperature ?0 to +125? ? supply voltage 4.5 to 5.5v application circuit
ordering information ordering code description operating package device shipping form** t emperature range type marking zmd31035ad es engineering samples die waffle tray as dice in waffletray zmd31035af es engineering samples ssop14 zmd sample box or tube as finished parts 31035af yyww *** zmd31035aab* dice on tested -40? to +125? die 6?wafer unsawn wafer zmd31035aac* dice on tested -40? to +125? die sawn 6?wafer sawn wafer on plastic frame zmd31035aad* dice in waffle tray -40? to +125? die waffle tray (100 dice / tray) ZMD31035AAF-T* finished parts -40? to +125? ssop14 zmd tube in tube 31035aaf (77 parts / tube) yyww zmd31035aaf-r* finished parts -40? to +125? ssop14 zmd tube in tape on reel 31035aaf (2000 parts /reel) yyww zmd31035kit evaluation kit box with pcbs, cd-rom, ssop14 samples * serial parts ?available from serial production start ** the quantity ordered should be a multiple of the quantity / packing unit as specified *** optional labeled with ?s?in addition www.zmd.biz for further information: zmd ag 2004 ?rev. 0.2 ?preliminary zmd ag grenzstrasse 28 01109 dresden germany t el +49.351.8822.366 fax +49.351.8822.337 sales@zmd.de zmd america, inc. 15373 innovation drive, suite 115 san diego, ca 92128 usa t el +1.858.674.8070 fax +1.858.674.8071 sales@zmda.com zmd america, inc. 201 old country road, suite 204 melville, ny 11747 usa t el +1.631.549.2666 fax +1.631.549.2882 sales@zmda.com this information applies to a product under development. its characteristics and specifications are subject to change without n otice. zmd assumes no obligation regarding future manufacture unless otherwise agreed to in writing. the information furnished hereby is believed to be true and accurate. however, zmd shall not be liable to any customer, licencee or any other third party for any damages in connection with or arising out of the furnishing, performance or use of this technical data. no obliga tion or liability to any customer, licencee or any other third party shall result from zmd's rendering of technical or other services. application examples detection of low-/overpressure in fuel tanks map sensors hydraulic reservoir pressure monitoring for abs and power steering colosseum-group.de engine management comfort functions ti re pressure monitoring (in combination with wireless transmitters)
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