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說明

The XTR115 and XTR116 are precision current output converters designed to transmit analog 4-to-20mA signals over an industry standard current loop. They provide accurate current scaling and output current limit functions.

The on-chip voltage regulator (5V) can be used to power external circuitry. A precision on-chip V_REF (2.5V for XTR115 and 4.096V for XTR116) can be used for offsetting or to excite transducers. A current return pin (I_RET) senses any current used in external circuitry to assure an accurate control of the output current.

The XTR115 is a fundamental building block of smart sensors using 4-to-20mA current transmission.

The XTR115 and XTR116 are specified for operation over the extended industrial temperature range, -40°C to +85°C.

特性

• LOW QUIESCENT CURRENT: 200µA
• 5V REGULATOR FOR EXTERNAL CIRCUITS
• V REF FOR SENSOR EXCITATION:
     XTR115: 2.5V
     XTR116: 4.096V
• LOW SPAN ERROR: 0.05%
• LOW NONLINEARITY ERROR: 0.003%
• WIDE LOOP SUPPLY RANGE: 7.5V to 36V
• SO-8 PACKAGE
• APPLICATIONS
  • 2-WIRE, 4-20mA CURRENT LOOP TRANSMITTER
  • SMART TRANSMITTER
  • INDUSTRIAL PROCESS CONTROL
  • TEST SYSTEMS
  • COMPATIBLE WITH HART MODEM
  • CURRENT AMPLIFIER
  • VOLTAGE-TO-CURRENT AMPLIFIER

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