Datasheet

AD8129/AD8130
Rev. C | Page 22 of 40
FREQUENCY (Hz)
OPEN-LOOP GAIN (dB)
80
1k
70
60
50
40
30
20
10
0
–10
10k 100k 1M 10M 100M 300M
180
135
90
45
0
PHASE MARGIN (Degrees)
φ
M
= 58°
2pF
+
–
+
–
PHASE
GAIN
02464-075
1k Ω
V
OUT
100 Ω
V
IN
1k Ω
Figure 74. AD8130 Open-Loop Gain and Phase vs. Frequency
FREQUENCY (Hz)
OPEN-LOOP GAIN (dB)
80
1k
70
60
50
40
30
20
10
0
90
10k 100k 1M 10M 100M 300M
180
135
90
45
0
PHASE MARGIN (Degrees)
2pF
1k Ω
V
OUT
100 Ω
V
IN
1k Ω
PHASE
GAIN
02464-076
φ
M
= 56°
Figure 75. AD8129 Open-Loop Gain and Phase vs. Frequency
FREQUENCY (Hz)
OUTPUT IMPEDANCE (
Ω
)
100
1k
10
1
100m
10m
1m
10k 100k 1M 10M 100M
AD8130, G = +1
AD8129, G = +10
V
S
= ±5V
02464-077
Figure 76. Closed-Loop Output Impedance vs. Frequency