AD812
90
0.4
PHASE
GAIN
G = +2
G = +2
= 150⍀
0
0.3
0.2
0.1
R
= 150⍀
L
R
L
–90
3V
V
= ؎15V
؎5V
S
5V
–180
–270
1
0
0
5V
3V
–1
–0.1
–2
–3
–4
V
= ؎15V
–0.2
S
V
= ؎15V
S
–0.3
–0.4
؎5V
؎5V
5V
–5
–6
–0.5
–0.6
3V
1
10
100
1000
100k
1M
10M
100M
FREQUENCY – Hz
FREQUENCY –MHz
Figure 47. Closed-Loop Gain and Phase vs. Frequency for
the Line Driver
Figure 50. Fine-Scale Gain Flatness vs. Frequency,
Gain = +2, RL = 150 Ω
120
1.0
R
R
R
= 590⍀
= 715⍀
= 750⍀
F
F
F
G = +2
= 150⍀
G = +2
= 150⍀
110
100
90
80
70
60
50
40
30
20
0.8
R
L
R
L
V
= 3V
S
0.6
0.4
PEAKING Յ 1dB
R
= 681⍀
F
0.2
NO PEAKING
0
V
= ؎15V
= 715⍀
S
–0.2
–0.4
–0.6
–0.8
–1.0
R
F
0
2
4
6
8
10
12
14
16
18
20
1
10
100
1000
SUPPLY VOLTAGE – ؎Volts
FREQUENCY – MHz
Figure 48. –3 dB Bandwidth vs. Supply Voltage,
Gain = +2, RL = 150 Ω
Figure 51. Closed-Loop Gain Matching vs. Frequency,
Gain = +2, RL = 150 Ω
DELAY
0.06
0.04
0.02
8
3V
6
5V
؎5V
4
DIFFERENTIAL GAIN
؎15V
2
0.08
0
0.06
DELAY MATCHING
0.4
DIFFERENTIAL PHASE
0.2
0.04
V
= 3V TO ؎15V
S
0
–0.2
–0.4
0.02
0
100k
1M
10M
100M
5
6
7
8
9
10
11
12
13
14
15
FREQUENCY – Hz
SUPPLY VOLTAGE – ؎Volts
Figure 52. Group Delay and Group Delay Matching vs.
Frequency, G = +2, RL = 150 Ω
Figure 49. Differential Gain and Phase vs. Supply Voltage,
Gain = +2, RL = 150 Ω
REV. B
–15–
ADI [ ADI ]
