AD8422 Data Sheet
Parameter
Test Conditions/
Comments
AD8422ARZ
AD8422BRZ
Unit Min Typ Max Min Typ Max
REFERENCE INPUT
R
IN
20 20 kΩ
I
IN
V
IN+
, V
IN−
, V
REF
= 0 V 35 50 35 50 µA
Voltage Range –V
S
+V
S
–V
S
+V
S
V
Gain to Output 1 1 V/V
Small Signal −3 dB Bandwidth
G = 1 2200 2200 kHz
G = 10 850 850 kHz
G = 100 120 120 kHz
G = 1000 12 12 kHz
Settling Time 0.01% 10 V step
G = 1 13 13 µs
G = 10 13 13 µs
G = 100 12 12 µs
G = 1000 80 80 µs
Settling Time 0.001% 10 V step
G = 1 15 15 µs
G = 100 15 15 µs
G = 1000 160 160 µs
Slew Rate G = 1 to 100 0.8 0.8 V/µs
GAIN
3
G = 1 + (19.8 kΩ/R
G
)
Gain Range 1 1000 1 1000 V/V
Gain Error V
OUT
± 10 V
G = 1 0.03 0.01 %
G = 10 0.2 0.04 %
G = 1000 0.2 0.04 %
Gain Nonlinearity V
OUT
= −10 V to +10 V
G = 1 R
L
= 2 kΩ 0.5 5 0.5 5 ppm
G = 10 2 5 2 5 ppm
G = 100 4 10 4 10 ppm
G = 1000 10 20 10 20 ppm
Gain vs. Temperature
G = 1 5 1 ppm/°C
G > 1 −80 –80 ppm/°C
INPUT
Input Impedance
Differential 200||2 200||2 GΩ||pF
Common Mode 200||2 200||2 GΩ||pF
Input Operating Voltage Range
4
V
S
= ±2.3 V to ±18 V −V
S
+ 1.2 +V
S
− 1.2 –V
S
+ 1.2 +V
S
− 1.2 V
Over Temperature T = −40°C to +85°C −V
S
+ 1.2 +V
S
− 1.3 –V
S
+ 1.2 +V
S
− 1.3 V
OUTPUT
Output Swing, R
L
= 10 kΩ V
S
= ±15 V −V
S
+ 0.2 +V
S
− 0.2 −V
S
+ 0.2 +V
S
− 0.2 V
Over Temperature T = −40°C to +85°C −V
S
+ 0.25 +V
S
− 0.25 −V
S
+ 0.25 +V
S
− 0.25 V
Output Swing, R
L
= 10 kΩ V
S
= ±2.3 V −V
S
+ 0.12 +V
S
− 0.12 −V
S
+ 0.12 +V
S
− 0.12 V
Over Temperature T = −40°C to +85°C −V
S
+ 0.13 +V
S
− 0.13 −V
S
+ 0.13 +V
S
− 0.13 V
Output Swing, R
L
= 2 kΩ V
S
= ±15 V −V
S
+ 0.25 +V
S
− 0.25 −V
S
+ 0.25 +V
S
− 0.25 V
Over Temperature
5
T = −40°C to +85°C −V
S
+ 0.3 +V
S
– 1.4 −V
S
+ 0.3 +V
S
– 1.4 V
Output Swing, R
L
= 2 kΩ V
S
= ±2.3 V −V
S
+ 0.16 +V
S
− 0.16 −V
S
+ 0.16 +V
S
− 0.16 V
Over Temperature T = −40°C to +85°C −V
S
+ 0.2 +V
S
− 0.2 −V
S
+ 0.2 +V
S
− 0.2 V
Short-Circuit Current 20 20 mA
Rev. A | Page 4 of 24
