參數(shù)資料
型號(hào)： XTR114UE4
廠商： Texas Instruments
文件頁(yè)數(shù)： 1/18頁(yè)
文件大小： 0K
描述： IC 4-20MA I-TRANSMITTER 14-SOIC
標(biāo)準(zhǔn)包裝： 50
類型： 電流發(fā)送器
輸入類型： 電壓
輸出類型： 電壓
接口： 2 線
電流 - 電源： 20mA
安裝類型： 表面貼裝
封裝/外殼： 14-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 14-SO
包裝： 管件
1
XTR112, XTR114
RTD
XTR112
XTR114
–
4-20 mA
V
PS
V
O
R
L
R
G
V
LIN
V
REG
+
7.5V to 36V
I
R
I
R
XTR112: I
R = 250A
XTR114: I
R = 100A
XTR112
XTR114
4-20mA CURRENT TRANSMITTERS
with Sensor Excitation and Linearization
FEATURES
q LOW UNADJUSTED ERROR
q PRECISION CURRENT SOURCES
XTR112: Two 250
A
XTR114: Two 100
A
q RTD OR BRIDGE EXCITATION
q LINEARIZATION
q TWO OR THREE-WIRE RTD OPERATION
q LOW OFFSET DRIFT: 0.4
V/°C
q LOW OUTPUT CURRENT NOISE: 30nAp-p
q HIGH PSR: 110dB min
q HIGH CMR: 86dB min
q WIDE SUPPLY RANGE: 7.5V TO 36V
q SO-14 SOIC PACKAGE
APPLICATIONS
q INDUSTRIAL PROCESS CONTROL
q FACTORY AUTOMATION
q SCADA REMOTE DATA ACQUISITION
q REMOTE TEMPERATURE AND PRESSURE
TRANSDUCERS
DESCRIPTION
The XTR112 and XTR114 are monolithic 4-20mA,
two-wire current transmitters. They provide complete
current excitation for high impedance platinum RTD
temperature sensors and bridges, instrumentation am-
plifier, and current output circuitry on a single inte-
grated circuit. The XTR112 has two 250
A current
sources while the XTR114 has two 100
A sources for
RTD excitation.
Versatile linearization circuitry provides a 2nd-order
correction to the RTD, typically achieving a 40:1
improvement in linearity.
Instrumentation amplifier gain can be configured for a
wide range of temperature or pressure measurements.
Total unadjusted error of the complete current trans-
mitter is low enough to permit use without adjustment
in many applications. This includes zero output cur-
rent drift, span drift and nonlinearity. The XTR112
and XTR114 operate on loop power supply voltages
down to 7.5V.
Both are available in an SO-14 surface-mount pack-
age and are specified for the –40
°C to +85°C indus-
trial temperature range.
1998 Burr-Brown Corporation
PDS-1473A
Printed in U.S.A. December, 1998
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
–200
°C
Pt1000 NONLINEARITY CORRECTION
USING XTR112 and XTR114
Process Temperature (
°C)
+850
°C
5
4
3
2
1
0
–1
Uncorrected
RTD Nonlinearity
Corrected
Nonlinearity
(%)
XTR112
XTR114
SBOS101
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