XTR115 Datasheet, PDF (1/13 Pages) Burr-Brown (TI) – 4-20mA CURRENT LOOP TRANSMITTERS

XTR116
XTR115
XTR115
XTR116
SBOS124A – JANUARY 2000 – REVISED NOVEMBER 2003
4-20mA CURRENT LOOP TRANSMITTERS
FEATURES
q LOW QUIESCENT CURRENT: 200µA
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
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
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
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.
XTR115
XTR116
+5V
V_REG
8
+5V
V+
Regulator
7
XTR115: 2.5V
XTR116: 4.096V
V_REF
1
Voltage
Reference
B
R_IN
I_IN
6
2
+
A1
V_LOOP
R_L
V_IN
–
3
I_RET
R₁
2.475kΩ
R_LIM
R₂
25Ω
E
5
I_O =
100 V_IN
R_IN
4
I = 100 • I_IN
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PRODUCTION DATA information is current as of publication date.
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standard warranty. Production processing does not necessarily include
testing of all parameters.
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