AD8422
Data Sheet
AD8422ARMZ
Typ
AD8422BRMZ
Typ
Test Conditions/
Comments
Parameter
Min
Max
Min
Max
Unit
Offset RTI vs. Supply (PSR)
G = 1
G = 10
G = 100
G = 1000
VS = 1.8 V to 18 V
90
110
130
150
150
100
120
140
140
120
140
160
160
dB
dB
dB
dB
110
124
130
INPUT CURRENT
Input Bias Current
Over Temperature
VS = 1.8 V to 15 V
T = −40°C to +85°C
0.5
1
2
0.2
0.5
1
nA
nA
Average Temperature
Coefficient
4
4
pA/°C
Input Offset Current
Over Temperature
VS = 1.8 V to 15 V
T = −40°C to +85°C
0.2
0.3
0.8
0.1
0.15
0.3
nA
nA
Average Temperature
Coefficient
1
1
pA/°C
REFERENCE INPUT
RIN
IIN
Voltage Range
Gain to Output
DYNAMIC RESPONSE
Small Signal −3 dB Bandwidth
G = 1
20
35
20
35
kΩ
µA
V
VIN+, VIN−, VREF = 0 V
50
+VS
50
+VS
−VS
−VS
1
1
V/V
2200
850
120
12
2200
850
120
12
kHz
kHz
kHz
kHz
G = 10
G = 100
G = 1000
Settling Time 0.01%
G = 1
G = 10
G = 100
G = 1000
10 V step
10 V step
13
13
12
80
13
13
12
80
µs
µs
µs
µs
Settling Time 0.001%
G = 1
15
15
µs
G = 10
15
15
µs
G = 100
15
15
µs
G = 1000
160
160
µs
Slew Rate
GAIN3
Gain Range
Gain Error
G = 1
G = 1 to 100
0.8
1
0.8
1
V/µs
G = 1 + (19.8 kΩ/RG)
1000
1000
V/V
VOUT 10 V
0.03
0.2
0.2
0.01
0.04
0.04
0.04
%
%
%
%
G = 10
G = 100
G = 1000
0.2
Gain Nonlinearity
G = 1
G = 10
G = 100
G = 1000
VOUT = −10 V to +10 V
RL = 2 kΩ
0.5
2
4
5
5
10
20
0.5
2
4
5
5
10
20
ppm
ppm
ppm
ppm
10
10
Gain vs. Temperature
G = 1
G > 1
5
−80
1
−80
ppm/°C
ppm/°C
Rev. 0 | Page 6 of 24