
AD620
Rev. H | Page 6 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
(@ 25°C, VS = ±15 V, RL = 2 kΩ, unless otherwise noted.)
INPUT OFFSET VOLTAGE (
μV)
20
30
40
50
–40
0
40
80
P
E
RCE
NTAGE
OF
UNITS
–80
SAMPLE SIZE = 360
10
0
00775-0-005
Figure 3. Typical Distribution of Input Offset Voltage
INPUT BIAS CURRENT (pA)
0
10
20
30
40
50
–600
0
600
P
E
RCE
NTAGE
OF
UNITS
–1200
1200
SAMPLE SIZE = 850
00775-0-006
Figure 4. Typical Distribution of Input Bias Current
10
20
30
40
50
–200
0
200
400
INPUT OFFSET CURRENT (pA)
P
E
RCE
NTAGE
OF
UNITS
–400
0
SAMPLE SIZE = 850
00775-0-007
Figure 5. Typical Distribution of Input Offset Current
TEMPERATURE (
°C)
INP
U
T
BIAS
CURRE
NT
(nA)
+IB
–IB
2.0
–2.0
175
–1.0
–1.5
–75
–0.5
0
0.5
1.0
1.5
125
75
25
–25
00775-0-008
Figure 6. Input Bias Current vs. Temperature
CHANGE
IN
OFFS
E
T
V
O
LTAGE
(μ
V)
1.5
0.5
WARM-UP TIME (Minutes)
2.0
0
01
1.0
4
3
2
5
00775-0-009
Figure 7. Change in Input Offset Voltage vs. Warm-Up Time
FREQUENCY (Hz)
1000
1
100k
100
10
10k
1k
100
VOLTA
GE
N
OISE
(
n
V/
H
z)
GAIN = 1
GAIN = 10
10
GAIN = 100, 1,000
GAIN = 1000
BW LIMIT
00775-0-010
Figure 8. Voltage Noise Spectral Density vs. Frequency (G = 11000)