Datasheet

INA282, INA283
INA284, INA285
INA286
www.ti.com SBOS485B –NOVEMBER 2009–REVISED SEPTEMBER 2012
ELECTRICAL CHARACTERISTICS
Boldface limits apply over the specified temperature range, T
A
= –40°C to +125°C.
At T
A
= +25°C, V+ = 5V, V
+IN
= 12V, V
REF1
= V
REF2
= 2.048V referenced to GND, and V
SENSE
= V
+IN
– V
–IN
, unless otherwise
noted.
INA282, INA283,
INA284, INA285, INA286
PARAMETER CONDITIONS MIN TYP MAX UNIT
INPUT
Offset Voltage, RTI
(1)
V
OS
V
SENSE
= 0mV ±20 ±70 μV
vs Temperature dV
OS
/dT ±0.3 ±1.5 μV/°C
vs Power Supply PSRR V
S
= +2.7V to +18V, V
SENSE
= 0mV 3 μV/V
Common-Mode Input Range V
CM
–14 80 V
Common-Mode Rejection CMRR V
+IN
= –14V to +80V, V
SENSE
= 0mV 120 140 dB
Input Bias Current per Pin
(2)
I
B
V
SENSE
= 0mV 25 μA
Input Offset Current I
OS
V
SENSE
= 0mV 1 μA
Differential Input Impedance 6 kΩ
REFERENCE INPUTS
Reference Input Gain 1 V/V
Reference Input Voltage Range
(3)
0 V
GND
+ 9 V
Divider Accuracy
(4)
±0.2 ±0.5 %
Reference Voltage Rejection Ratio V
REF
1 = V
REF
2 = 40mV to 9V, V+ = 18V
INA282 ±25 ±75 μV/V
vs Temperature 0.055 μV/V/°C
INA283 ±13 ±30 μV/V
vs Temperature 0.040 μV/V/°C
INA284 ±6 ±25 μV/V
vs Temperature 0.015 μV/V/°C
INA285 ±4 ±10 μV/V
vs Temperature 0.010 μV/V/°C
INA286 ±17 ±45 μV/V
vs Temperature 0.040 μV/V/°C
GND + 0.5V ≤ V
OUT
≤ (V+) – 0.5V;
GAIN
(5)
V
REF1
= V
REF2
= (V+)/2 for all devices
Gain G
INA282 V+ = +5V 50 V/V
INA283 V+ = +5V 200 V/V
INA284 V+ = +12V 500 V/V
INA285 V+ = +12V 1000 V/V
INA286 V+ = +5V 100 V/V
Gain Error
INA282, INA283, INA286 ±0.4 ±1.4 %
INA284, INA285 ±0.4 ±1.6 %
vs Temperature 0.0008 0.005 %/°C
OUTPUT
Nonlinearity Error ±0.01 %
Output Impedance 1.5 Ω
Maximum Capacitive Load No sustained oscillation 1 nF
(1) RTI = referred-to-input.
(2) See typical characteristic graph Figure 20 .
(3) The average of the voltage on pins REF1 and REF2 must be between V
GND
and the lesser of (V
GND
+9V) and V+.
(4) Reference divider accuracy specifies the match between the reference divider resistors using the configuration in Figure 37.
(5) See typical characteristic graph Figure 25.
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