1

®

XTR115, XTR116

PDS-1582A

Printed in U.S.A. January, 2000

XTR115

XTR116

4-20mA CURRENT LOOP TRANSMITTERS

®

FEATURES

q LOW QUIESCENT CURRENT: 200

q 5V REGULATOR FOR EXTERNAL CIRCUITS

q V

XTR115: 2.5V

XTR116: 4.096V

q LOW SPAN ERROR: 0.05%

q LOW NONLINEARITY ERROR: 0.003%

q WIDE LOOP SUPPLY RANGE: 7.5V to 36V

q SO-8 PACKAGE

APPLICATIONS

q 2-WIRE, 4-20mA CURRENT LOOP

TRANSMITTER

q SMART TRANSMITTER

q INDUSTRIAL PROCESS CONTROL

q TEST SYSTEMS

q COMPATIBLE WITH HART MODEM

q CURRENT AMPLIFIER

q VOLTAGE-TO-CURRENT AMPLIFIER

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

(2.5V for XTR115 and 4.096V for XTR116) can be

used for offsetting or to excite transducers. A current

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.

XTR115

XTR116

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

For most current data sheet and other product

information, visit www.burr-brown.com

R

IN

I

IN

V

IN

+

–

I

RET

XTR115

XTR116

+5V

Regulator

R

2

25

Ω

R

LIM

E

B

V+

R

1

2.475k

Ω

I

100 V

IN

R

IN

A1

Voltage

Reference

+5V

V

REG

V

REF

2

3

8

1

5

4

7

6

XTR115: 2.5V

XTR116: 4.096V

R

L

V

LOOP

I = 100 • I

IN