The Analog Mixed Signal Company ZMD31035 Automotive Sensor Signal Conditioner PRELIMINARY Features Benefits • 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 +125°C • Supply voltage 4.5 to 5.5V • No external trimming components required • PC-controlled configuration and calibration via one-wire interface – simple, low cost • High accuracy (±0.1% FSO @ -25 to 85°C; ±0.25% FSO @ -40 to 125°C) Application Circuit VSSA VDDB VSSA VDDA BRIDGE SENSOR VBN VSSB VBP AOUT ZMD31035 VTN TEMP. SENSING DIODE 100n DI CLK 100n VDDE VSS 15n GND OUT OWI 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. VDD 100n VSSE Brief Description VSUPPLY 4.5...5.5V • 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 Application Examples • Detection of low-/overpressure in fuel tanks • Engine management • MAP Sensors • Comfort functions • Hydraulic reservoir pressure monitoring for ABS • Tire pressure monitoring (in combination and power steering with wireless transmitters) Ordering Information Ordering Code Description ZMD31035AD ES engineering samples Operating Temperature Range Package Type Device Marking die Shipping Form** waffle tray as dice in waffletray ZMD31035AF ES engineering samples SSOP14 as finished parts ZMD sample box or tube 31035AF YYWW *** ZMD31035AAB* dice on tested -40°C to +125°C die 6” wafer -40°C to +125°C die sawn 6” wafer unsawn wafer ZMD31035AAC* dice on tested sawn wafer ZMD31035AAD* dice in waffle tray on plastic frame -40°C to +125°C die waffle tray (100 dice / tray) ZMD31035AAF-T* finished parts -40°C to +125°C SSOP14 in tube ZMD tube 31035AAF (77 parts / tube) YYWW ZMD31035AAF-R* finished parts -40°C to +125°C SSOP14 in tape on reel ZMD tube 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 “ES” in addition colosseum-group.de For further information: ZMD AG Grenzstrasse 28 01109 Dresden Germany Tel +49.351.8822.366 Fax +49.351.8822.337 [email protected] © ZMD AG 2004 · Rev. 0.2 · Preliminary ZMD America, Inc. 201 Old Country Road, Suite 204 Melville, NY 11747 USA Tel +1.631.549.2666 Fax +1.631.549.2882 [email protected] ZMD America, Inc. 15373 Innovation Drive, Suite 115 San Diego, CA 92128 USA Tel +1.858.674.8070 Fax +1.858.674.8071 [email protected] 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.