Datasheet

Data Sheet AD8120
Rev. A | Page 7 of 16
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C, V
S
= ±5 V, R
L
= 150 Ω, 10% to 90% input rise/fall time (t
R
/t
F
) = 4 ns, unless otherwise noted.
4
2
0
–2
–4
–6
–8
–10
–12
0.3 1 10 100 1k
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
07839-010
DELAY CODE = 63
DELAY CODE = 33
DELAY CODE = 1
DELAY CODE = 2
Figure 4. Small-Signal Frequency Response for Various Delay Settings,
V
OUT
= 0.2 V p-p
0.25
0.20
0.15
0.10
0.05
0
–0.05
–20 0 20 40 60 80 100 120
TIME (ns)
AMPLITUDE (V)
07839-012
DELAY CODE = 63
DELAY
CODE = 33
DELAY CODE = 0
INPUT
V
S
= ±5V
LOAD = 150Ω
Figure 5. Small-Signal Pulse Response for Various Delay Settings
50
45
40
35
30
25
20
15
10
5
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
1 12 22 33 44 55 62
ANALOG CONTROL VOLTAGE (V)
DELAY CODE
RELATIVE DELAY (ns)
07839-021
Figure 6. Relative Delay vs. Delay Code and Analog Control Voltage
4
6
2
0
–2
–4
–6
–8
–10
–12
0.3 1 10 100 1k
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
07839-011
DELAY CODE = 63
DELAY CODE = 33
DELAY CODE = 1
DELAY CODE = 2
Figure 7. Video Signal Frequency Response for Various Delay Settings,
V
OUT
= 1.4 V p-p
1.8
0.8
1.0
1.2
1.4
1.6
0.6
0.4
0.2
0
–0.2
–20 0 20 40 60 80 100 120
TIME (ns)
AMPLITUDE (V)
07839-013
DELAY CODE = 63
DELAY CODE = 33
V
S
= ±5V, LOAD = 150Ω
DELAY CODE = 0
INPUT
Figure 8. Large-Signal Pulse Response for Various Delay Settings
120
110
100
90
80
70
60
50
40
0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64
DELAY CODE
QUIESCENT CURRENT (mA)
07839-018
TWO CHANNELS
ONE CHANNEL
THREE CHANNELS
Figure 9. Quiescent Current vs. Delay Code