Datasheet

AD8421 Data Sheet
Rev. 0 | Page 4 of 28
AR Grade BR Grade
Parameter
Test Conditions/
Comments
Min Typ Max Min Typ Max
Unit
DYNAMIC RESPONSE
Small Signal Bandwidth −3 dB
G = 1 10 10 MHz
G = 10 10 10 MHz
G = 100 2 2 MHz
G = 1000 0.2 0.2 MHz
Settling Time to 0.01% 10 V step
G = 1 0.7 0.7 μs
G = 10 0.4 0.4 μs
G = 100 0.6 0.6 μs
G = 1000 5 5 μs
Settling Time to 0.001% 10 V step
G = 1 1 1 μs
G = 10 0.6 0.6 μs
G = 100 0.8 0.8 μs
G = 1000 6 6 μs
Slew Rate
G = 1 to 100 35 35 V/μs
GAIN
3
G = 1 + (9.9 kΩ/R
G
)
Gain Range 1 10,000 1 10,000 V/V
Gain Error V
OUT
= ±10 V
G = 1 0.02 0.01 %
G = 10 to 1000 0.2 0.1 %
Gain Nonlinearity V
OUT
= −10 V to +10 V
G = 1 R
L
≥ 2 kΩ 1 1 ppm
R
L
= 600 Ω 1 3 1 3 ppm
G = 10 to 1000 R
L
≥ 600 Ω 30 50 30 50 ppm
V
OUT
= −5 V to +5 V 5 10 5 10 ppm
Gain vs. Temperature
3
G = 1 5 0.1 1 ppm/°C
G > 1 −50 −50 ppm/°C
INPUT
Input Impedance
Differential 30||3 30||3 GΩ||pF
Common Mode 30||3 30||3 GΩ||pF
Input Operating Voltage Range
4
V
S
= ±2.5 V to ±18 V −V
S
+ 2.3 +V
S
− 1.8 −V
S
+ 2.3 +V
S
− 1.8 V
Over Temperature T
A
= −40°C −V
S
+ 2.5 +V
S
− 2.0 −V
S
+ 2.5 +V
S
− 2.0 V
T
A
= +85°C −V
S
+ 2.1 +V
S
− 1.8 −V
S
+ 2.1 +V
S
− 1.8 V
OUTPUT R
L
= 2 kΩ
Output Swing V
S
= ±2.5 V to ±18 V −V
S
+ 1.2 +Vs − 1.6 −V
S
+ 1.2 +V
S
− 1.6 V
Over Temperature T
A
= −40°C to +85°C −V
S
+ 1.2 +Vs − 1.6 −V
S
+ 1.2 +V
S
− 1.6 V
Short-Circuit Current 65 65 mA
REFERENCE INPUT
R
IN
20 20 kΩ
I
IN
V
IN
+, V
IN
− = 0 V 20 24 20 24 μA
Voltage Range −V
S
+V
S
−V
S
+V
S
V
Reference Gain to Output
1 ±
0.0001
1 ±
0.0001
V/V