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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 VREF (2.5V for XTR115 and 4.096V for XTR116) can be used for offsetting or to excite transducers. A current return pin (IRET) 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 to +85.
XTR115 Maximum Ratings
Power Supply, V+ (referenced to IO pin) ..................................... 40V Input Voltage (referenced to IRET pin) ................................. 0V to V+ Output Current Limit ........................................................ Continuous VREG, Short-Circuit ............................................................Continuous VREF, Short-Circuit .............................................................Continuous Operating Temperature ..............................................55 to +125 Storage Temperature Range .......................................55to +125 Lead Temperature (soldering, 10s) ........................................... +300 Junction Temperature ................................................................ +165 NOTE: Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability.
· 2-WIRE, 4-20mA CURRENT LOOP TRANSMITTER · SMART TRANSMITTER · INDUSTRIAL PROCESS CONTROL · TEST SYSTEMS · COMPATIBLE WITH HART MODEM · CURRENT AMPLIFIER · VOLTAGE-TO-CURRENT AMPLIFIER