Datasheet

AD620
Rev. H | Page 7 of 20
FREQUENCY (Hz)
1000
100
10
1
10
1000
100
CURRENT NOISE (fA/ Hz)
00775-0-011
Figure 9. Current Noise Spectral Density vs. Frequency
RTI NOISE (2.0
μ
V/DIV)
TIME (1 SEC/DIV)
00775-0-012
Figure 10. 0.1 Hz to 10 Hz RTI Voltage Noise (G = 1)
RTI NOISE (0.1
μ
V/DIV)
TIME (1 SEC/DIV)
00775-0-013
Figure 11. 0.1 Hz to 10 Hz RTI Voltage Noise (G = 1000)
00775-0-014
Figure 12. 0.1 Hz to 10 Hz Current Noise, 5 pA/Div
100
1000
AD620A
FET INPUT
IN-AMP
SOURCE RESISTANCE (
Ω )
TOTAL DRIFT FROM 25
°
C TO 85
°
C, RTI (
μ
V)
100,000
10
1k 10M
10,000
10k 1M100k
00775-0-015
Figure 13. 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
00775-0-016
Figure 14. Typical CMR vs. Frequency, RTI, Zero to 1 kΩ Source Imbalance