The XTR115 and XTR116UA 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 XTR116UA are specified for operation over the extended industrial temperature range, -40°C to +85°C.
Feature
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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Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
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