®
XTR
116
XTR
115
XTR115
XTR116
For most current data sheet and other product
information, visit www.burr-brown.com
4-20mA CURRENT LOOP TRANSMITTERS
FEATURES
q
LOW QUIESCENT CURRENT: 200
µ
A
q
5V REGULATOR FOR EXTERNAL CIRCUITS
q
V
REF
FOR SENSOR EXCITATION:
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
power external circuitry. A precision on-chip V
REF
(2.5V for XTR115 and 4.096V for XTR116) can be
XTR115
XTR116
+5V
V
REG
8
V
REF
1
Voltage
Reference
+5V
Regulator
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 opera-
tion over the extended industrial temperature range,
–40°C to +85°C.
V+
7
XTR115: 2.5V
XTR116: 4.096V
V
LOOP
R
IN
+
V
IN
–
3
I
RET
R
1
2.475kΩ
R
LIM
R
2
25Ω
I
O
=
4
I = 100 • I
IN
100 V
IN
R
IN
I
IN
2
A1
E
5
B
6
R
L
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
®
©
2000 Burr-Brown Corporation
PDS-1582A
1
XTR115, XTR116
Printed in U.S.A. January, 2000
BURR-BROWN [ BURR-BROWN CORPORATION ]
