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Burr-Brown Corporation

XTR106 Datasheet Preview

XTR106 Datasheet

4-20mA CURRENT TRANSMITTER

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XTR106
XTR106
XTR106
SBOS092A JUNE 1998 REVISED NOVEMBER 2003
4-20mA CURRENT TRANSMITTER
with Bridge Excitation and Linearization
FEATURES
q LOW TOTAL UNADJUSTED ERROR
q 2.5V, 5V BRIDGE EXCITATION REFERENCE
q 5.1V REGULATOR OUTPUT
q LOW SPAN DRIFT: ±25ppm/°C max
q LOW OFFSET DRIFT: 0.25µV/°C
q HIGH PSR: 110dB min
q HIGH CMR: 86dB min
q WIDE SUPPLY RANGE: 7.5V to 36V
q 14-PIN DIP AND SO-14 SURFACE-MOUNT
DESCRIPTION
The XTR106 is a low cost, monolithic 4-20mA, two-
wire current transmitter designed for bridge sensors. It
provides complete bridge excitation (2.5V or 5V refer-
ence), instrumentation amplifier, sensor linearization,
and current output circuitry. Current for powering ad-
ditional external input circuitry is available from the
VREG pin.
The instrumentation amplifier can be used over a wide
range of gain, accommodating a variety of input signal
types and sensors. Total unadjusted error of the com-
plete current transmitter, including the linearized bridge,
is low enough to permit use without adjustment in many
applications. The XTR106 operates on loop power sup-
ply voltages down to 7.5V.
Linearization circuitry provides second-order correction
to the transfer function by controlling bridge excitation
voltage. It provides up to a 20:1 improvement in
nonlinearity, even with low cost transducers.
The XTR106 is available in 14-pin plastic DIP and
SO-14 surface-mount packages and is specified for the
–40°C to +85°C temperature range. Operation is from
–55°C to +125°C.
APPLICATIONS
q PRESSURE BRIDGE TRANSMITTERS
q STRAIN GAGE TRANSMITTERS
q TEMPERATURE BRIDGE TRANSMITTERS
q INDUSTRIAL PROCESS CONTROL
q SCADA REMOTE DATA ACQUISITION
q REMOTE TRANSDUCERS
q WEIGHING SYSTEMS
q ACCELEROMETERS
BRIDGE NONLINEARITY CORRECTION
USING XTR106
2.0
Uncorrected
Bridge Output
1.5
1.0
0.5
Corrected
0
0.5
0
5
10
Bridge Output (mV)
VREG (5.1V)
VREF5
VREF 2.5V
RLIN
+
7.5V to 36V
VPS
4-20mA
5V
RG
XTR106
VO
RL
IRET
Lin
IOUT
Polarity
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
www.ti.com
Copyright © 1998-2003, Texas Instruments Incorporated




Burr-Brown Corporation

XTR106 Datasheet Preview

XTR106 Datasheet

4-20mA CURRENT TRANSMITTER

No Preview Available !

SPECIFICATIONS
At TA = +25°C, V+ = 24V, and TIP29C external transistor, unless otherwise noted.
XTR106P, U
XTR106PA, UA
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
OUTPUT
Output Current Equation
Output Current, Specified Range
Over-Scale Limit
Under-Scale Limit
IO
IOVER
IUNDER
ZERO OUTPUT(1)
Initial Error
vs Temperature
vs Supply Voltage, V+
vs Common-Mode Voltage (CMRR)
vs VREG (IO)
Noise: 0.1Hz to 10Hz
SPAN
Span Equation (Transconductance)
Untrimmed Error
vs Temperature(2)
Nonlinearity: Ideal Input (3)
IZERO
in
S
INPUT(4)
Offset Voltage
vs Temperature
vs Supply Voltage, V+
vs Common-Mode Voltage, RTI
Common-Mode Range(5)
Input Bias Current
vs Temperature
Input Offset Current
vs Temperature
Impedance: Differential
Common-Mode
Noise: 0.1Hz to 10Hz
VOLTAGE REFERENCES(5)
VOS
CMRR
VCM
IB
IOS
ZIN
Vn
Initial: 2.5V Reference
5V Reference
Accuracy
vs Temperature
vs Supply Voltage, V+
vs Load
Noise: 0.1Hz to 10Hz
VREG(5)
Accuracy
vs Temperature
vs Supply Voltage, V+
Output Current
Output Impedance
LINEARIZATION(6)
RLIN (external) Equation
KLIN Linearization Factor
VREF2.5
VREF5
VREG
IREG
RLIN
KLIN
Accuracy
vs Temperature
Max Correctable Sensor Nonlinearity B
POWER SUPPLY
V+
Specified
Voltage Range
TEMPERATURE RANGE
Specification
Operating
Storage
Thermal Resistance
θJA
14-Pin DIP
SO-14 Surface Mount
IREG = 0, IREF = 0
IREF + IREG = 2.5mA
VIN = 0V, RG =
TA = 40°C to +85°C
V+ = 7.5V to 36V
VCM = 1.1V to 3.5V(5)
Full Scale (VIN) = 50mV
TA = 40°C to +85°C
Full Scale (VIN) = 50mV
VCM = 2.5V
TA = 40°C to +85°C
V+ = 7.5V to 36V
VCM = 1.1V to 3.5V(5)
TA = 40°C to +85°C
TA = 40°C to +85°C
Lin Polarity Connected
to VREG, RLIN = 0
VREF = 2.5V or 5V
TA = 40°C to +85°C
V+ = 7.5V to 36V
IREF = 0mA to 2.5mA
TA = 40°C to +85°C
V+ = 7.5V to 36V
IREG = 0mA to 2.5mA
VREF = 5V
VREF = 2.5V
TA = 40°C to +85°C
VREF = 5V
VREF = 2.5V
IO = VIN (40/RG) + 4mA, VIN in Volts, RG in
4
20
24
28
30
1
1.6
2.2
2.9
3.4
4
4
±5
±25
±0.07
±0.9
0.04
0.2
0.02
0.8
0.035
S = 40/RG
±0.05
±0.2
±3
±25
±0.001 ±0.01
±50
±100
±0.25
±1.5
±0.1
±3
±10
±50
1.1
3.5
5
25
20
±0.2
±3
5
0.1 || 1
5 || 10
0.6
±50
±0.4
±250
±3
±100
50
±10
A
mA
mA
mA
mA
mA
µA
µA/°C
µA/V
µA/V
µA/mA
µAp-p
A/V
%
ppm/°C
%
µV
µV/°C
µV/V
µV/V
V
nA
pA/°C
nA
pA/°C
G|| pF
G|| pF
µVp-p
2.5
5
±0.05
±20
±5
60
10
±0.25
±35
±20
5.1
±0.02
±0.1
±0.3
1
See Typical Curves
80
±0.5
±75
RLIN
=
KLIN
1
4B
2B
,
KLIN in
,
B
is
nonlinearity
relative
to VFS
6.645
9.905
±1
±50
±5
2.5, +5
±5
±100
+24
+7.5
+36
40
+85
55
+125
55
+125
80
100
V
V
%
ppm/°C
ppm/V
ppm/mA
µVp-p
V
V
mV/°C
mV/V
mA
k
k
%
ppm/°C
% of VFS
% of VFS
V
V
°C
°C
°C
°C/W
°C/W
Specification same as XTR106P, XTR106U.
NOTES: (1) Describes accuracy of the 4mA low-scale offset current. Does not include input amplifier effects. Can be trimmed to zero. (2) Does not include initial
error or TCR of gain-setting resistor, RG. (3) Increasing the full-scale input range improves nonlinearity. (4) Does not include Zero Output initial error. (5) Voltage
measured with respect to IRET pin. (6) See Linearizationtext for detailed explanation. VFS = full-scale VIN.
2
XTR106
www.ti.com
SBOS092A


Part Number XTR106
Description 4-20mA CURRENT TRANSMITTER
Maker Burr-Brown Corporation
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XTR106 Datasheet PDF






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