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| The Analog Mixed Signal Company ZMD31035 Automotive Sensor Signal Conditioner PRELIMINARY 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 -40 to +125C * Supply voltage 4.5 to 5.5V Benefits * No external trimming components required * PC-controlled configuration and calibration via one-wire interface - simple, low cost * High accuracy (0.1% FSO @ -25 to 85C; 0.25% FSO @ -40 to 125C) Brief Description The ZMD31035 is a CMOS integrated circuit for highlyaccurate 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 digitally: fast, precise and without the cost overhead associated with trimming by external devices or laser. The ZMD31035 is optimized for automotive environments by it's protection circuitry and excellent electromagnetic compatibility. Application Circuit VSSA VDDB VTN VSSA VDDA ZMD31035 TEMP. SENSING DIODE 100n DI CLK VDD 100n VDDE 100n VSS VBN BRIDGE SENSOR VSSB VBP AOUT VSSE * 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 15n GND OUT OWI VSUPPLY 4.5...5.5V Application Examples * Detection of low-/overpressure in fuel tanks * MAP Sensors * Hydraulic reservoir pressure monitoring for ABS * Engine management * Comfort functions * Tire pressure monitoring (in combination and power steering with wireless transmitters) Ordering Information Ordering Code ZMD31035AD ES Description engineering samples as dice in waffletray ZMD31035AF ES engineering samples as finished parts SSOP14 ZMD 31035AF YYWW *** ZMD31035AAB* dice on tested unsawn wafer ZMD31035AAC* dice on tested sawn wafer ZMD31035AAD* dice in waffle tray -40C to +125C die -40C to +125C die sawn 6" wafer on plastic frame waffle tray (100 dice / tray) ZMD31035AAF-T* finished parts in tube -40C to +125C SSOP14 ZMD 31035AAF YYWW ZMD31035AAF-R* finished parts in tape on reel -40C to +125C SSOP14 ZMD 31035AAF YYWW ZMD31035KIT evaluation kit box with PCBs, CD-ROM, SSOP14 samples tube (2000 parts /reel) tube (77 parts / tube) -40C to +125C die 6" wafer sample box or tube Operating Temperature Range Package Type die Device Marking Shipping Form** waffle tray * Serial parts - available from serial production start ** The quantity ordered should be a multiple of the quantity / packing unit as specified *** Optional labeled with "ES" in addition For further information: ZMD AG Grenzstrasse 28 01109 Dresden Germany Tel +49.351.8822.366 Fax +49.351.8822.337 sales@zmd.de ZMD America, Inc. 201 Old Country Road, Suite 204 Melville, NY 11747 USA Tel +1.631.549.2666 Fax +1.631.549.2882 sales@zmda.com ZMD America, Inc. 15373 Innovation Drive, Suite 115 San Diego, CA 92128 USA Tel +1.858.674.8070 Fax +1.858.674.8071 sales@zmda.com colosseum-group.de (c) ZMD AG 2004 * Rev. 0.2 * Preliminary www.zmd.biz This information applies to a product under development. Its characteristics and specifications are subject to change without notice. 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 obligation or liability to any customer, licencee or any other third party shall result from ZMD's rendering of technical or other services. |
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