Datasheet

"#$#
SBOS146A − OCTOBER 1986 − REVISED AUGUST 2004
www.ti.com
3
ELECTRICAL CHARACTERISTICS
At T
A
= +25°C, +V
CC
= 24VDC, and R
L
= 100Ω with external transistor connected, unless otherwise noted.
XTR101AG XTR101BG XTR101AP XTR101AU
PARAMETER CONDITIONS
MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX
UNIT
OUTPUT AND LOAD CHARACTERISTICS
Current Linear Operating Region 4 20 ∗ ∗ ∗ ∗ ∗ ∗ mA
Derated Performance 3.8 22 ∗ ∗ ∗ ∗ ∗ ∗ mA
Current Limit 28 38 ∗ ∗ 31 ∗ 31 ∗ mA
Offset Current Error I
OS
, I
O
= 4mA ±3.9 ±10 ±2.5 ±6 ±8.5 ±19 ±8.5 ±19 µA
vs Temperature ∆I
OS
/∆T ±10.5 ±20 ±8 ±15 ±10.5 ±20 ∗ ppm, FS/°C
Full-Scale Output Current
Error
Full-Scale = 20mA ±20 ±40 ±15 ±30 ±30 ±60 ±30 ±60 µA
Power-Supply Voltage V
CC
, Pins 7 and 8,
Compliance
(1)
+11.6 ±40 ∗ ∗ ∗ ∗ ∗ ∗ VDC
Load Resistance
At V
CC
= +24V,
I
O
= 20mA
600 ∗ ∗ ∗ Ω
At V
CC
= +40V,
I
O
= 20mA
1400 ∗ ∗ ∗ Ω
SPAN
Output Current Equation R
S
in Ω, e
1
and e
2
in V
I
O
+ 4mA )
ƪ
0.016ampsńvolt )
ǒ
40ńR
S
Ǔƫǒ
e
2
* e
1
Ǔ
Span Equation R
S
in Ω
S +
ƪ
0.016ampsńvolt )
ǒ
40ńR
S
Ǔƫ
A/V
vs Temperature Excluding TCR of R
S
±30 ±100 ∗ ∗ ∗ ∗ ∗ ∗ ppm/°C
Untrimmed Error
(2)
ε
SPAN
−5 −2.5 0 ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ %
Nonlinearity ε
NONLINEARITY
0.01 ∗ ∗ ∗ %
Hysteresis 0 ∗ ∗ ∗ %
Dead Band 0 ∗ ∗ ∗ %
INPUT CHARACTERISTICS
Impedance: Differential 0.4 3 ∗ ∗ ∗ GΩ pF
Common-Mode 10 3 ∗ ∗ ∗ GΩ pF
Voltage Range, Full-Scale ∆e = (e
2
− e
1
)
(3)
0 1 ∗ ∗ ∗ ∗ ∗ ∗ V
Offset Voltage V
OS
±30 ±60 ±20 ±30 ∗ ±100 ∗ ±100 µV
vs Temperature ∆V
OS
/∆T ±0.75 ±1.5 ±0.35 ±0.75 ∗ ∗ ∗ ∗ µV/°C
Power-Supply Rejection ∆V
CC
/PSRR = V
OS
Error 110 125 ∗ ∗ ∗ 122 ∗ 122 dB
Bias Current I
B
60 150 ∗ ∗ ∗ ∗ ∗ ∗ nA
vs Temperature ∆I
B
/∆T 0.30 1 ∗ ∗ ∗ ∗ ∗ ∗ nA/°C
Offset Current I
OSI
10 ±30 ∗ ±20 ∗ ∗ ∗ ∗ nA
vs Temperature ∆I
OSI
/∆T 0.1 0.3 ∗ ∗ ∗ ∗ ∗ ∗ nA/°C
Common-Mode
Rejection
(4)
DC 90 100 ∗ ∗ ∗ ∗ ∗ ∗ dB
Common-Mode Range e
1
and e
2
with Respect to Pin 7 4 6 ∗ ∗ ∗ ∗ ∗ ∗ V
CURRENT SOURCES
Magnitude 1 ∗ ∗ ∗ mA
Accuracy V
CC
= 24V,
V
PIN 8
− V
PIN 10, 11
= 19V,
R
2
= 5kΩ, see Figure 5
±0.06
±0.1
7
±0.02
5
±0.075 ±0.2 ±0.37 ±0.2 ±0.37 %
vs Temperature ±50 ±80 ±30 ±50 ∗ ∗ ∗ ∗ ppm/°C
vs V
CC
±3 ∗ ∗ ∗ ppm/V
vs Time ±8 ∗ ∗ ∗ ppm/month
Compliance Voltage Ratio
Match
With Respect to
Pin 7 Tracking
0 V
CC
− 3.5 ∗ ∗ ∗ ∗ ∗ ∗ V
Accuracy (1 − I
REF1
/I
REF2
) × 100%
±0.01
4
±0.0
6
±0.00
9
±0.04 ±0.031 ±0.088 ±0.031 ±0.088 %
vs Temperature ±15 10 ∗ ∗ ppm/°C
vs V
CC
±10 ∗ ∗ ∗ ppm/V
vs Time ±1 ∗ ∗ ∗ ppm/month
Output Impedance 10 20 ∗ ∗ ∗ 15 ∗ 15 MΩ
TEMPERATURE RANGE
Specification −40 +85 ∗ ∗ ∗ ∗ ∗ ∗ °C
Operating −55 +125 ∗ ∗ −40 +85 −40 +85 °C
Storage −55 +165 ∗ ∗ −55 +125 −55 +125 °C
∗ Same as XTR101AG.
(1)
See the Typical Characteristics.
(2)
Span error shown is untrimmed and may be adjusted to zero.
(3)
e
1
and e
2
are signals on the −In and +In terminals with respect to the output, pin 7. While the maximum permissible ∆e is 1V, it is primarily intended for much lower signal levels, for
instance, 10mV or 50mV full-scale for the XTR101A and XTR101B grades, respectively. 2mV FS is also possible with the B grade, but accuracy will degrade due to possible errors
in the low value span resistance and very high amplification of offset, drift, and noise.
(4)
Offset voltage is trimmed with the application of a 5V common-mode voltage. Thus, the associated common-mode error is removed. See the Application Information section.