AD8055/AD8056
Rev. J | Page 9 of 16
45
90
0
–45
–90
135
PHASE (Degrees)
FREQUENCY (Hz)
180
10k 100k 1M 10M 100M 500M
01063-029
FREQUENCY (MHz)
0
–90
–10
–20
–30
–40
–50
–60
–70
–80
–100
CMRR (dB)
0.1 1 10 100 500
402Ω
50Ω
402Ω
402Ω
58Ω 402Ω
01063-026
Figure 24. CMRR vs. Frequency
Figure 27. Phase vs. Frequency
V
OUT
(2V/DIV)
V
IN
(1V/DIV)
G=+2
R
L
= 100Ω
R
F
= 402Ω
V
S
=±5V
50ns
01063-027
–0.04
–0.02
0
0.02
0.04
–0.04
DIFFERENTIAL GAIN (%)
–0.02
0
0.02
0.04
DIFFERENTIAL PHASE
(Degrees)
IRE
1ST 2ND 3RD 4TH 5TH 6TH 7TH 8TH 9TH 10TH 11TH
IRE
1ST 2ND 3RD 4TH 5TH 6TH 7TH 8TH 9TH 10TH 11TH
1 BACK TERMINATED LOAD (150Ω)
1 BACK TERMINATED LOAD (150Ω)
G=+2
R
F
= 402Ω
G=+2
R
F
= 402Ω
01063-030
Figure 25. Overload Recovery
Figure 28. Differential Gain and Differential Phase
FREQUENCY (MHz)
90
40
80
70
60
50
30
20
10
0
–10
OPEN-LOOP GAIN (dB)
0.01 0.1 1 10 100 500
R
L
=100Ω
01063-028
–0.04
DIFFERENTIAL GAIN (%)
–0.02
0
0.02
0.04
DIFFERENTIAL PHASE
(Degrees)
IRE
1ST 2ND 3RD 4TH 5TH 6TH 7TH 8TH 9TH 10TH 11TH
IRE
1ST 2ND 3RD 4TH 5TH 6TH 7TH 8TH 9TH 10TH 11TH
G=+2
R
F
= 402Ω
–0.15
–0.10
0
0.05
0.15
0.10
–0.05
G=+2
R
F
= 402Ω
4 VIDEO LOADS (37.5Ω)
4 VIDEO LOADS (37.5Ω)
01063-031
Figure 29. Differential Gain and Differential Phase
Figure 26. Open-Loop Gain vs. Frequency