AD8221 查看數據表（PDF） - Analog Devices
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AD8221 Datasheet PDF : 24 Pages
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0.80
0.75
0.70
0.65
VS = ±15V
0.60
VS = ±5V
0.55
0.50
0.45
0.40
–15
–10
–5
0
5
10
15
COMMON-MODE VOLTAGE (V)
Figure 10. IBIAS vs. CMV
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0
0.01
0.1
1
10
WARM-UP TIME (min)
Figure 11. Change in Input Offset Voltage vs. Warm-Up Time
5
VS = ±15V
4
3
2
1
INPUT OFFSET CURRENT
0
INPUT BIAS CURRENT
–1
–2
–3
–4
–5
–40 –20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
Figure 12. Input Bias Current and Offset Current vs. Temperature
AD8221
180
160
GAIN = 1000
140 GAIN = 100
120 GAIN = 10
100 GAIN = 1
80
GAIN = 1000
60
40
20
0.1
1
10
100
1k
10k 100k 1M
FREQUENCY (Hz)
Figure 13. Positive PSRR vs. Frequency, RTI (G = 1 to 1000)
180
160
GAIN = 1000
140
GAIN = 100
120 GAIN = 10
100 GAIN = 1
80
60
40
20
0.1
1
10
100
1k
10k 100k 1M
FREQUENCY (Hz)
Figure 14. Negative PSRR vs. Frequency, RTI (G = 1 to 1000)
100k
10k
BEST AVAILABLE FET
INPUT IN-AMP GAIN = 1
1k
BEST AVAILABLE FET
INPUT IN-AMP GAIN = 1000
100
AD8221 GAIN = 1
10
10
AD8221 GAIN = 1000
100
1k
10k
100k
1M
10M
SOURCE RESISTANCE (
Figure 15. Total Drift vs. Source Resistance
Rev. C | Page 11 of 24
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