Datasheet

AD8220
Rev. B | Page 3 of 28
SPECIFICATIONS
V
S
+ = 15 V, V
S
− = −15 V, V
REF
= 0 V, T
A
= 25°C, T
OPR
= −40°C to +85°C for A and B grades. T
OPR
= −40°C to +125°C for W grade,
G = 1, R
L
= 2 kΩ
1
, unless otherwise noted.
Table 1.
A Grade B Grade W Grade
Parameter Test Conditions Min Typ Max Min Typ Max Min Typ Max Unit
COMMON-MODE
REJECTION RATIO (CMRR)
T
A
for A, B grades,
T
OPR
for W grade
CMRR DC to 60 Hz with
1 kΩ Source Imbalance
V
CM
= ±10 V
G = 1 78 86 77 dB
G = 10 94 100 92 dB
G = 100 94 100 92 dB
G = 1000 94 100 92 dB
CMRR at 5 kHz V
CM
= ±10 V
G = 1 74 80 72 dB
G = 10 84 90 80 dB
G = 100 84 90 80 dB
G = 1000 84 90 80 dB
NOISE RTI noise =
√(e
ni
2
+ (e
no
/G)
2
), T
A
Voltage Noise, 1 kHz
Input Voltage Noise, e
ni
V
IN
+, V
IN
− = 0 V 14 14 17 14 nV/√Hz
Output Voltage Noise, e
no
V
IN
+, V
IN
− = 0 V 90 90 100 90 nV/√Hz
RTI, 0.1 Hz to 10 Hz
G = 1 5 5 5 μV p-p
G = 1000 0.8 0.8 0.8 μV p-p
Current Noise f = 1 kHz 1 1 1 fA/√Hz
VOLTAGE OFFSET V
OS
= V
OSI
+ V
OSO
/G
Input Offset, V
OSI
T
A
−250 +250 −125 +125 −250 +250 μV
Average TC T
OPR
−10 +10 −5 +5 −10 +10 μV/°C
Output Offset, V
OSO
T
A
−750 +750 −500 +500 −750 +750 μV
Average TC T
OPR
−10 +10 −5 +5 −10 +10 μV/°C
Offset RTI vs. Supply
(PSR)
V
S
= ±5 V to ±15 V,
T
A
for A, B grades,
T
OPR
for W grade
G = 1 86 86 80 dB
G = 10 96 100 92 dB
G = 100 96 100 92 dB
G = 1000 96 100 92 dB
INPUT CURRENT
Input Bias Current T
A
25 10 25 pA
Over Temperature T
OPR
0.3 0.3 100 nA
Input Offset Current T
A
2 0.6 2 pA
Over Temperature T
OPR
0.005 0.005 10 nA
DYNAMIC RESPONSE
Small Signal Bandwidth,
−3 dB
T
A
G = 1 1500 1500 1500 kHz
G = 10 800 800 800 kHz
G = 100 120 120 120 kHz
G = 1000 14 14 14 kHz