Datasheet

Data Sheet AD8420
Rev. 0 | Page 13 of 28
70
–30
–20
–10
0
10
20
30
40
50
60
1 10 100 1k 10k 100k 1M
GAIN (dB)
FREQUENCY (Hz)
09945-024
V
S
= 2.7V
GAIN = 1000
GAIN = 100
GAIN = 10
GAIN = 1
Figure 27. Gain vs. Frequency, 2.7 V Single Supply
140
120
0
20
40
60
80
100
0.1 1 10 100 1k 10k 100k
CMRR (dB)
FREQUENCY (Hz)
GAIN = 1000
GAIN = 100
GAIN = 10
GAIN = 1
09945-327
BANDWIDTH
LIMIT
V
S
= ±15V
Figure 28. CMRR vs. Frequency, RTI, V
S
= ±15 V
140
120
0
20
40
60
80
100
0.1 1 10 100 1k 10k 100k
CMRR (dB)
FREQUENCY (Hz)
GAIN = 1000
GAIN = 100
GAIN = 10
GAIN = 1
09945-328
V
S
= ±15V
Figure 29. CMRR vs. Frequency, RTI, 1 kΩ Source Imbalance, V
S
= ±15 V
120
0
20
40
60
80
100
010.90.80.70.60.50.40.30.20.1
CMRR (dB)
DIFFERENTIAL INPUT VOLTAGE (V)
.0
V
S
= ±15V
V
CM
= ±10V
09945-329
Figure 30. CMRR vs. Differential Input Voltage
–40 –25 –10 5 20 35 50 65 80 95 110 125
SUPPLY CURRENT (µA)
TEMPERATURE (°C)
09945-027
20
30
40
50
60
70
80
90
100
110
120
V
S
= 5V
Figure 31. Supply Current vs. Temperature, V
S
= +5 V
30
0
250
200
150
100
50
0
–50
5
10
15
20
25
–40 1251109580655035205–10–25
BIAS CURRENT (nA)
OFFSET CURRENT (pA)
TEMPERATURE (°C)
OFFSET CURRENT
–IN BIAS CURRENT
+IN BIAS CURRENT
09945-331
Figure 32. Input Bias Current and Input Offset Current vs. Temperature