AD8031/AD8032
110
105
100
95
–A
OL
V
S
= 5V
100
90
500mV
1V
INPUT BIAS CURRENT (mA)
10
GAIN (dB)
90
85
80
75
70
65
0
2k
4k
+A
OL
0
–10
V
S
= 5V
10
0%
500mV
–1.5
0.5
2.5
4.5
6.5
01056-023
6k
R
LOAD
(Ω)
8k
10k
01056-020
60
INPUT VOLTAGE (V)
Figure 20. Open-Loop Gain (A
OL
) vs. R
LOAD
86
V
S
= 5V
R
L
= 1kΩ
84
–A
OL
Figure 23. Differential Input Overvoltage I-V Characteristics
0.05
DIFF GAIN (%)
0
–0.05
–0.10
–0.15
1ST 2ND 3RD 4TH 5TH 6TH 7TH 8TH 9TH 10TH 11TH
GAIN (dB)
82
+A
OL
DIFF PHASE (Degrees)
80
0.10
0.05
0
–0.05
–0.10
1ST 2ND 3RD 4TH 5TH 6TH 7TH 8TH 9TH 10TH 11TH
01056-024
78
0
10 20 30 40 50
TEMPERATURE (°C)
60
70
80
90
Figure 21. Open Loop Gain vs. (A
OL
) Temperature
Figure 24. Differential Gain and Phase @ V
S
= ±5 V; R
L
= 1 kΩ
110
R
LOAD
= 10kΩ
V
S
= 5V
INPUT VOLTAGE NOISE (nV/ Hz)
01056-021
76
–40 –30 –20 –10
100
V
S
= 5V
30
VOLTAGE NOISE
10
10
100
INPUT CURRENT NOISE (pA/ Hz)
01056-025
100
90
A
OL
(dB)
80
R
LOAD
= 1kΩ
70
3
CURRENT NOISE
1
1
60
0.1
01056-022
50
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
V
OUT
(V)
0.3
10
100
1k
10k
100k
1M
10M
Figure 22. Open-Loop Gain (A
OL
) vs. V
OUT
FREQUENCY (Hz)
Figure 25. Input Voltage Noise vs. Frequency
Rev. C | Page 9 of 20
AD [ ANALOG DEVICES ]
