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ZMD31035AFES Datasheet(PDF) 1 Page - Zentrum Mikroelektronik Dresden AG |
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ZMD31035AFES Datasheet(HTML) 1 Page - Zentrum Mikroelektronik Dresden AG |
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1 / 2 page  The Analog Mixed Signal Company ZMD31035 Automotive Sensor Signal Conditioner PRELIMINAR Y 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 85°C; ±0.25% FSO @ -40 to 125°C) 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 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 –40 to +125°C • Supply voltage 4.5 to 5.5V Application Circuit |
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