Datasheet

AD620
Rev. H | Page 6 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
(@ 25°C, V
S
= ±15 V, R
L
= 2 kΩ, unless otherwise noted.)
INPUT OFFSET VOLTAGE ( μ V)
20
30
40
50
–40 0 40 80
PERCENTAGE 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
PERCENTAGE 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)
PERCENTAGE OF UNITS
–400
0
SAMPLE SIZE = 850
00775-0-007
Figure 5. Typical Distribution of Input Offset Current
TEMPERATURE (°C)
INPUT BIAS CURRENT (nA)
+I
B
–I
B
2.0
–2.0
175
–1.0
–1.5
–75
–0.5
0
0.5
1.0
1.5
1257525–25
00775-0-008
Figure 6. Input Bias Current vs. Temperature
CHANGE IN OFFSET VOLTAGE (μV)
1.5
0.5
WARM-UP TIME (Minutes)
2.0
0
01
1.0
432
5
00775-0-009
Figure 7. Change in Input Offset Voltage vs. Warm-Up Time
FREQUENCY (Hz)
1000
1
1 100k
100
10
10k1k100
VOLTAGE NOISE (nV/ Hz)
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 = 1−1000)