XTR115U/2K5

1 FEATURES

● LOW QUIESCENT CURRENT: 200µA

● 5V REGULATOR FOR EXTERNAL CIRCUITS

● VREF 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

2.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

3 DESCRIPTION

The XTR115 and XTR116 are precision current out-put 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 opera- tion over the extended industrial temperature range, –40°C to +85°C.

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