Datasheet

AD8227
Rev. 0 | Page 3 of 24
SPECIFICATIONS
+V
S
= +15 V, −V
S
= −15 V, V
REF
= 0 V, T
A
= 25°C, G = 5, R
L
= 10 k, specifications referred to input, unless otherwise noted.
Table 2.
Test Conditions/ A Grade B Grade
Parameter Comments Min Typ Max Min Typ Max Unit
COMMON-MODE REJECTION RATIO V
CM
= −10 V to +10 V
DC to 60 Hz
G = 5 90 100 dB
G = 10 96 105 dB
G = 100 105 110 dB
G = 1000 105 110 dB
5 kHz
G = 5 80 80 dB
G = 10 86 86 dB
G = 100 86 86 dB
G = 1000 86 86 dB
NOISE
Total noise:
e
N
= √(e
NI
2
+ (e
NO
/G)
2
)
Voltage Noise, 1 kHz
Input Voltage Noise, e
NI
24 25 24 25 nV/√Hz
Output Voltage Noise, e
NO
310 315 310 315 nV/√Hz
RTI f = 0.1 Hz to 10 Hz
G = 5 1.5 1.5 μV p-p
G = 10 0.9 0.9 μV p-p
G = 100 to 1000 0.5 0.5 μV p-p
Current Noise f = 1 kHz 100 100 fA/√Hz
f = 0.1 Hz to 10 Hz 3 3 pA p-p
VOLTAGE OFFSET
Total offset voltage:
V
OS
= V
OSI
+ (V
OSO
/G)
Input Offset, V
OSI
V
S
= ±5 V to ±15 V 200 100 μV
Average Temperature Drift T
A
= −40°C to +125°C 0.2 2 0.2 1 μV/°C
Output Offset, V
OSO
V
S
= ±5 V to ±15 V 1000 500 μV
Average Temperature Drift T
A
= −40°C to +125°C 2 10 2 5 μV/°C
Offset RTI vs. Supply (PSR) V
S
= ±5 V to ±15 V
G = 5 90 100 dB
G = 10 96 105 dB
G = 100 105 110 dB
G = 1000 105 110 dB
INPUT CURRENT
Input Bias Current
1
T
A
= +25°C 5 20 27 5 20 27 nA
T
A
= +125°C 5 15 25 5 15 25 nA
T
A
= −40°C 5 30 35 5 30 35 nA
Average Temperature Drift T
A
= −40°C to +125°C 70 70 pA/°C
Input Offset Current T
A
= +25°C 1.5 1.5 nA
T
A
= +125°C 1.5 1.5 nA
T
A
= −40°C 2 2 nA
Average Temperature Drift T
A
= −40°C to +125°C 5 5 pA/°C
REFERENCE INPUT
R
IN
60 60 kΩ
I
IN
12 12 μA
Voltage Range −V
S
+V
S
−V
S
+V
S
V
Reference Gain to Output 1 1 V/V
Reference Gain Error 0.01 0.01 %