AD8221
SPECIFICATIONS
V
S
= ±15 V, V
REF
= 0 V, T
A
= 25°C, G = 1, R
L
= 2 kΩ, unless otherwise noted.
Table 1.
Parameter
COMMON-MODE REJECTION RATIO
CMRR DC to 60 Hz with 1 kΩ
Source Imbalance
G=1
G = 10
G = 100
G = 1000
CMRR at 10 kHz
G=1
G = 10
G = 100
G = 1000
NOISE
Voltage Noise, 1 kHz
Input Voltage Noise, e
NI
Output Voltage Noise, e
NO
RTI
G=1
G = 10
G = 100 to 1000
Current Noise
VOLTAGE OFFSET
Input Offset, V
OSI
Over Temperature
Average TC
Output Offset, V
OSO
Over Temperature
Average TC
Offset RTI vs. Supply (PSR)
G=1
G = 10
G = 100
G = 1000
INPUT CURRENT
Input Bias Current
Over Temperature
Average TC
Input Offset Current
Over Temperature
Average TC
REFERENCE INPUT
R
IN
I
IN
Voltage Range
Gain to Output
Conditions
V
CM
= −10 V to +10 V
80
100
120
130
V
CM
= −10 V to +10 V
80
90
100
100
RTI noise =
√e
NI2
+ (e
NO
/G)
2
V
IN+
, V
IN−
, V
REF
= 0
f = 0.1 Hz to 10 Hz
2
0.5
0.25
40
6
60
86
0.4
300
0.66
6
90
110
124
130
110
120
130
140
0.5
T = −40°C to +85°C
1
0.2
T = −40°C to +85°C
1
20
50
1.5
2.0
0.6
0.8
94
114
130
140
110
130
140
150
0.2
1
0.1
1
20
50
0.4
1
0.4
0.6
2
0.5
0.25
40
6
25
45
0.3
200
0.45
5
μV p-p
μV p-p
μV p-p
fA/√Hz
pA p-p
μV
μV
μV/°C
μV
mV
μV/°C
dB
dB
dB
dB
nA
nA
pA/°C
nA
nA
pA/°C
kΩ
μA
V
V/V
8
75
8
75
nV/√Hz
nV/√Hz
80
100
110
110
dB
dB
dB
dB
90
110
130
140
dB
dB
dB
dB
Min
AR Grade
Typ
Max
Min
BR Grade
Typ
Max
Unit
f = 1 kHz
f = 0.1 Hz to 10 Hz
V
S
= ±5 V to ±15 V
T = −40°C to +85°C
V
S
= ±5 V to ±15 V
T = −40°C to +85°C
V
S
= ±2.3 V to ±18 V
V
IN+
, V
IN−
, V
REF
= 0
–V
S
60
+V
S
1 ± 0.0001
–V
S
60
+V
S
1 ± 0.0001
Rev. B | Page 3 of 24
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