XTR108

具有“智能”可编程信号调节的 4-20mA 两线制发送器

The is a "smart", programmable, 4-20mA, two-wire transmitter designed for temperature and bridge sensors. Zero, span, and linearization errors in the analog signal path can be calibrated via a standard digital serial interface, eliminating manual trimming. Non-volatile ex-ternal EEPROM stores calibration settings.

The all-analog signal path contains an input multiplexer, autozeroed programmable-gain instrumentation amplifier, dual programmable current sources, linearization circuit, voltage reference, sub-regulator, internal oscillator, control logic, and an output current amplifier. Programmable level shifting compensates for sensor DC offsets. Selectable up- and down-scale output indicates out-of-range and burn-out per NAMUR NE43. Automatic reset is initiated when supply is lost.

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COMPLETE TRANSMITTER +RTD LINEARIZA ON

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TWO-WIRE, 4-20mA OUTPUT

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VOLTAGE OUTPUT 0.5V to 4.5V

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ELIMINATES POTENTIOMETERS AND TRIMMING

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DIGITALLY CALIBRATED

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5V SUB-REGULATOR OUTPUT

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SERIAL SPI™ BUS INTERFACE

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SSOP-24 PACKAGE

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APPLICATIONS

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REMOTE RTD TRANSMITTERS

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PRESSURE BRIDGE TRANSMITTERS

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STRAIN GAGE TRANSMITTERS

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SCADA REMOTE DATA ACQUISITION

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WEIGHING SYSTEMS

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INDUSTRIAL PROCESS CONTROL

SPI is a trademark of Motorola, Inc. All other trademarks are the property of their respective owners.