Datasheet

AD8222
Rev. A | Page 9 of 24
200
150
100
50
0
–50
–100
–150
–200
–15 151050–5–10
INPUT BIAS CURRENT (pA)
COMMON-MODE VOLTAGE (V)
05947-009
V
S
= ±15V
V
S
= ±5V
Figure 9. I
BIAS
vs. Common-Mode Voltage
2.0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0246810
WARM-UP TIME (Minutes)
05947-010
CHANGE IN INPUT OFFSET VOLTAGE (µV)
Figure 10. Change in Input Offset Voltage vs. Warm-Up Time
1000
800
600
400
200
0
–200
–400
–600
–800
–1000
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
05947-011
INPUT BIAS CURRENT (pA)
POSITIVE
OFFSET CURRENT
NEGATIVE
Figure 11. Input Bias Current and Offset Current vs. Temperature
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0.1 1M100k10k1k100101
FREQUENCY (Hz)
05947-012
+PSRR (dB)
GAIN = 1
GAIN = 10
GAIN = 100
GAIN = 1000
BANDWIDTH
LIMITED
Figure 12. Positive PSRR vs. Frequency, RTI (G = 1 to 1000)
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0.1 1M100k10k1k100101
FREQUENCY (Hz)
05947-013
–PSRR (dB)
GAIN = 1
GAIN = 10
GAIN = 100
GAIN = 1000
Figure 13. Negative PSRR vs. Frequency, RTI (G = 1 to 1000)
10k
1k
100
10
1
1 10M1M100k10k1k10010
SOURCE RESISTANCE (Ω)
05947-014
TOTAL DRIFT: 25°C TO 85°C RTI (µV)
GAIN = 1
GAIN = 10
GAIN = 100
GAIN = 1000
Figure 14. Total Drift vs. Source Resistance