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AD620–Typical Characteristics
FREQUENCY – Hz
1000
100
10
1
10
1000
100
CURRENT NOISE – fA/ΊHz
Figure 9. Current Noise Spectral Density vs. Frequency
RTI NOISE – 2.0 V/DIV
TIME – 1 SEC/DIV
Figure 10a. 0.1 Hz to 10 Hz RTI Voltage Noise (G = 1)
RTI NOISE – 0.1V/DIV
TIME – 1 SEC/DIV
Figure 10b. 0.1 Hz to 10 Hz RTI Voltage Noise (G = 1000)
Figure 11. 0.1 Hz to 10 Hz Current Noise, 5 pA/Div
100
1000
AD620A
FET INPUT
IN-AMP
SOURCE RESISTANCE – ⍀
TOTAL DRIFT FROM 25؇C TO 85؇C, RTI – V
100,000
10
1k 10M
10,000
10k 1M100k
Figure 12. Total Drift vs. Source Resistance
FREQUENCY – Hz
CMR – dB
+160
0
1M
+80
+40
1
+60
0.1
+140
+100
+120
100k10k1k10010
G = 1000
G = 100
G = 10
G = 1
+20
Figure 13. CMR vs. Frequency, RTI, Zero to 1 k
Ω
Source
Imbalance
REV. E
–6–