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ZMD31030ADES Datasheet(PDF) 1 Page - Zentrum Mikroelektronik Dresden AG |
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ZMD31030ADES Datasheet(HTML) 1 Page - Zentrum Mikroelektronik Dresden AG |
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1 / 2 page  The Analog Mixed Signal Company ZMD31030 Automotive Sensor Signal Conditioner with LIN Interface PRELIMINAR Y Brief Description ZMD31030 is a CMOS integrated circuit for highly-accurate amplification and sensor-specific correction of bridge sensor and temperature 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 coeffi- cients stored in a non-volatile EEPROM. The ZMD31030 is adjustable to nearly all piezo-resistive bridge sensors. Measured values are provided at the PWM output or at the LIN interface. The digital LIN bus interface can be used for a simple PC-con- trolled calibration procedure, in order to program a set of cali- bration coefficients into an on-chip EEPROM. Thus a specific sensor and a ZMD31030 are mated digitally: fast, precise and without the cost overhead associated with trimming by external devices or laser. The ZMD31030 is optimized for automotive environments by it’s protection circuitry and excellent electromagnetic compatibility. • Evaluation kit will be available, containing PCBs, SSOP20 samples, software, documentation • Support for industrial mass calibration available • Quick circuit customization possible for large production volumes ZMD31030 VSSB VBN VBP VDDB VTN ANALOG SUPPLY VDDA CONTROL ANALOG SIGNAL CONDITIONING DIGITAL SIGNAL POST PROCESSING POWER MANAGEMENT AND PROTECTION CIRCUITS I/O IF LIN CONTROLLER LIN TRANSCEIVER TEST IF DIGITAL SUPPLY VDD VSSA ANALOG GROUND VSS DIGITAL GROUND VB VBAT LIN GND LIN DI CLK Features • Digital compensation of sensor offset, sensitivity, temperature drift and non-linearity • Adjustable to nearly all piezo-resistive bridge sensor types • Digital one-shot calibration: quick and precise • Selectable temperature compensation reference: internal or external diode • Selectable separate input channel for an external temperature sensor • Output options: PWM (bridge sensor signal) or LIN interface (bridge and temp. sensor signal) • Digital sensor calibration via LIN interface • Sampling rate typically 125Hz • High voltage protection • Reverse polarity and short circuit protection • Operation temperature -40 to +125°C • Supply voltage 8 to 18V Benefits • No external trimming components required • PC-controlled configuration and calibration via digital LIN bus interface – simple, low cost • High accuracy (±0.1% FSO @ -25 to 85°C; ±0.25% FSO @ -40 to 125°C) Block Schematic and Application Circuit (Example) www.lin-subbus.de |
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