Datasheet

AD8426
Rev. 0 | Page 7 of 28
Test Conditions/
Comments
A Grade B Grade
Parameter Min Typ Max Min Typ Max Unit
REFERENCE INPUT
R
IN
100 100 kΩ
I
IN
7 7 μA
Voltage Range −V
S
+V
S
−V
S
+V
S
V
Reference Gain to Output 1 1 V/V
Reference Gain Error 0.01 0.01 %
GAIN G = 1 + (49.4 kΩ/R
G
)
Gain Range 1 1000 1 1000 V/V
Gain Error
G = 1 V
OUT
= 0.8 V to 1.8 V 0.05 0.05 %
G = 5 to 1000 V
OUT
= 0.2 V to 2.5 V 0.3 0.1 %
Gain vs. Temperature
2
G = 1 T
A
= −40°C to +85°C 5 1 ppm/°C
T
A
= +85°C to +125°C 5 2 ppm/°C
G > 1 T
A
= −40°C to +125°C −100 −100 ppm/°C
INPUT
−V
S
= 0 V, +V
S
= 2.7 V
to 36 V
Input Impedance
Differential 0.8||2 0.8||2 GΩ||pF
Common Mode 0.4||2 0.4||2 GΩ||pF
Input Operating Voltage
Range
3
T
A
= +25°C −0.1 +V
S
− 0.7 −0.1 +V
S
− 0.7 V
T
A
= +125°C −0.05 +V
S
− 0.6 −0.05 +V
S
− 0.6 V
T
A
= −40°C −0.15 +V
S
− 0.9 −0.15 +V
S
− 0.9 V
Input Overvoltage Range T
A
= −40°C to +125°C +V
S
− 40 −V
S
+ 40 +V
S
− 40 −V
S
+ 40 V
OUTPUT
Output Swing
R
L
= 10 kΩ to 1.35 V T
A
= −40°C to +125°C 0.1 +V
S
− 0.1 0.1 +V
S
− 0.1 V
Short-Circuit Current 13 13 mA
POWER SUPPLY
Operating Range Single-supply operation 2.2 36 2.2 36 V
Quiescent Current
(Per Amplifier)
−V
S
= 0 V, +V
S
= 2.7 V
T
A
= +25°C 325 400 325 400 μA
T
A
= −40°C 250 325 250 325 μA
T
A
= +85°C 425 500 425 500 μA
T
A
= +125°C 475 550 475 550 μA
TEMPERATURE RANGE −40 +125 −40 +125 °C
1
The input stage uses PNP transistors; therefore, input bias current always flows into the part.
2
The values specified for G > 1 do not include the effects of the external gain-setting resistor, R
G
.
3
Input voltage range of the AD8426 input stage. The input range depends on the common-mode voltage, the differential voltage, the gain, and the reference voltage.
See the section for more information. Input Voltage Range