Datasheet

2
®
XTR112, XTR114
SPECIFICATIONS
At T
A
= +25°C, V+ = 24V, and TIP29C external transistor, unless otherwise noted.
XTR112U XTR112UA
XTR114U XTR114UA
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
OUTPUT
Output Current Equation A
Output Current, Specified Range 4 20 ✻✻mA
Over-Scale Limit 24 27 30 ✻✻✻ mA
Under-Scale Limit: XTR112 I
REG
= 0 0.9 1.3 1.7 ✻✻✻ mA
XTR114 0.6 1 1.4 ✻✻✻ mA
ZERO OUTPUT
(1)
V
IN
= 0V, R
G
= ∞ 4 ✻ mA
Initial Error ±5 ±25 ✻ ±50 µA
vs Temperature ±0.07 ±0.5 ✻ ±0.9 µA/°C
vs Supply Voltage, V+ V+ = 7.5V to 36V 0.04 0.2 ✻✻ µA/V
vs Common-Mode Voltage V
CM
= 1.25V to 3.5V
(2)
0.02 ✻ µA/V
vs V
REG
Output Current 0.3 ✻ µA/mA
Noise: 0.1Hz to 10Hz 0.03 ✻ µAp-p
SPAN
Span Equation (transconductance)
S = 40/R
G
✻ A/V
Initial Error
(3)
Full Scale (V
IN
) = 50mV ±0.05 ±0.2 ✻ ±0.4 %
vs Temperature
(3)
±3 ±25 ✻✻ ppm/°C
Nonlinearity: Ideal Input
(4)
Full Scale (V
IN
) = 50mV 0.003 0.01 ✻✻ %
INPUT
(5)
Offset Voltage V
CM
= 2V ±50 ±100 ✻ ±250 µV
vs Temperature ±0.4 ±1.5 ✻ ±3 µV/°C
vs Supply Voltage, V+ V+ = 7.5V to 36V ±0.3 ±3 ✻✻ µV/V
vs Common-Mode Voltage, V
CM
= 1.25V to 3.5V
(2)
±10 ±50 ✻ ±100 µV/V
RTI (CMRR)
Common-Mode Input Range
(2)
1.25 3.5 ✻✻V
Input Bias Current 525 ✻ 50 nA
vs Temperature 20 ✻ pA/°C
Input Offset Current ±0.2 ±3 ✻ ±10 nA
vs Temperature 5 ✻ pA/°C
Impedance: Differential 0.1 || 1 ✻ GΩ || pF
Common-Mode 5 || 10 ✻ GΩ || pF
Noise: 0.1Hz to 10Hz 0.6 ✻ µVp-p
CURRENT SOURCES V
O
= 2V
(6)
Current: XTR112 250 ✻ µA
XTR114 100 ✻ µA
Accuracy ±0.05 ±0.2 ✻ ±0.4 %
vs Temperature ±15 ±35 ✻ ±75 ppm/°C
vs Power Supply, V+ V+ = 7.5V to 36V ±10 ±25 ✻✻ ppm/V
Matching ±0.02 ±0.1 ✻ ±0.2 %
vs Temperature ±3 ±15 ✻ ±30 ppm/°C
vs Power Supply, V+ V+ = 7.5V to 36V 1 10 ✻✻ ppm/V
Compliance Voltage, Positive (V+) –3
(V+) –2.5 ✻✻ V
Negative
(2)
0 –0.2 ✻✻ V
Output Impedance: XTR112 500 ✻ MΩ
XTR114 1.2 ✻ GΩ
Noise: 0.1Hz to 10Hz: XTR112 0.001 ✻ µAp-p
XTR114 0.0004 ✻ µAp-p
V
REG
(2)
5.1 ✻ V
Accuracy ±0.02 ±0.1 ✻✻ V
vs Temperature ±0.2 ✻ mV/°C
vs Supply Voltage, V+ 1 ✻ mV/V
Output Current: XTR112 –1, +2.1 ✻ mA
XTR114 –1, +2.4 ✻ mA
Output Impedance 75 ✻ Ω
LINEARIZATION
R
LIN
(internal) 1 ✻ kΩ
Accuracy ±0.2 ±0.5 ✻ ±1%
vs Temperature ±25 ±100 ✻✻ ppm/°C
POWER SUPPLY
Specified Voltage +24 ✻ V
Operating Voltage Range +7.5 +36 ✻✻V
TEMPERATURE RANGE
Specification, T
MIN
to T
MAX
–40 +85 ✻✻°C
Operating/Storage Range –55 +125 ✻✻°C
Thermal Resistance,
θ
JA
SO-14 Surface-Mount 100 ✻ °C/W
I
O
= V
IN
• (40/R
G
) + 4mA, V
IN
in Volts, R
G
in Ω
✻ Specification same as XTR112U, XTR114U.
NOTES: (1) Describes accuracy of the 4mA low-scale offset current. Does not include input amplifier effects. Can be trimmed to zero. (2) Voltage measured with
respect to I
RET
pin. (3) Does not include initial error or TCR of gain-setting resistor, R
G
. (4) Increasing the full-scale input range improves nonlinearity. (5) Does not
include Zero Output initial error. (6) Current source output voltage with respect to I
RET
pin.