Analog Devices AD620 - Manual (Page 6)

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 – 0.1
␮
V/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 1M 100k
Figure 12. Total Drift vs. Source Resistance
FREQUENCY – Hz
CMR – dB
+160
0
1M
+80
+40
1
+60
0.1
+140
+100
+120
100k 10k 1k 100 10
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–