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ZMD31012 Datasheet(PDF) 1 Page - Zentrum Mikroelektronik Dresden AG |
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ZMD31012 Datasheet(HTML) 1 Page - Zentrum Mikroelektronik Dresden AG |
1 / 2 page Features two ZMD31010 • Separate digital compensation of sensor offset, sensitivity, temperature coefficient and non-linearity • Accommodates differential sensor signal spans from 1.2mV/V to 60mV/V for two inputs • Dual ZACwireTM one-wire interface • Internal temperature compensation reference via bandgap PTAT* • Optional sequential output of both temperature and bridge readings two ZACwireTM digital output • Output options: ratiometric analog voltage, absolute analog voltage, digital one-wire-interface • Supply voltage 2.7V to 5.5V, with external JFET 5.5V to 30V • Current consumption 2mA • Operation temperature -50°C to +150°C • Fast response time: 1ms • High voltage protection up to 30V with external JFET • Chopper stabilized true differential ADC • Buffered and chopper stabilize output DAC *Proportional to absolute temperature • ZMD31010 Development Kit can be used • Support for industrial mass calibration will be available • Quick circuit customization possible for large production volumes Application Circuit Benefits The ZMD31012 combines the benefits of two single ZMD31010. • No external trimming components required • PC-controlled configuration and calibration via one-wire interface – simple, low cost • High accuracy (±0.1% FSO @ -25°C to 85°C; ±0.25% FSO @ -40°C to 125°C) • Single pass calibration – quick and precise Due to the two independent channels the ZMD31012 provides a perfect fit for the following selected samples: • Applications that require redundancy • Measurement of differential pressure • Flow Sensors Brief Description The ZMD31012 consists of two ZMD31010 dies in a standard SSOP14 packages. ZMD31012 is a CMOS integrated circuit, which enables easy and precise calibration of resistive bridge sensors via EEPROM. When mated to a resistive bridge sensor, it will digitally correct offset and gain with the option to correct offset and gain coefficients and linearity over temperature. A second compensa- tion can be enabled for temperature coefficients of gain or offset or bridge linearity. ZMD31012 communicates via ZMD’s ZACwireTM serial interface to the host computer and is easily mass calibrated in a Windows® environment. Once calibrated, the output SIGTM pin can provide selectable 0V to 1V, rail-to-rail ratiometric analog output, or digital serial output of bridge data with optional temperature data. The Analog Mixed Signal Company ZMD31012 RBic2Lite™ Two Low-cost Sensor Signal Conditioners ZMD31010 Chips in One Package P R E L I M I N A RY |
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