Datasheet

AD8143
Rev. 0 | Page 12 of 24
5
–5
1
1000
05538-013
FREQUENCY (MHz)
GAIN (dB)
10 100
4
3
2
1
0
–1
–2
–3
–4
R
L
= 1kΩ
V
OUT
= 0.2V p-p
G = 1, C
L
= 2pF
G = 1, C
L
= 10pF, R
SNUB
= 40Ω
G = 2, C
L
= 2pF
G = 2, C
L
= 10pF, R
SNUB
= 40Ω
Figure 10. Small Signal Frequency Response at Various Gains and 10 pF
Capacitive Load Buffered by 40 Ω Resistor
3
–7
1 10 100
05538-009
FREQUENCY (MHz)
GAIN (dB)
2
1
0
–1
–2
–3
–4
–5
–6
V
OUT
= 0.2V p-p
G = 1
G = 2
Figure 11. Small Signal Frequency Response at Various Gains
0.5
–0.5
1 100
05538-010
FREQUENCY (MHz)
GAIN (dB)
10
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
R
L
= 150Ω, V
OUT
= 0.2V p-p
R
L
= 150Ω, V
OUT
= 2V p-p
R
L
= 1kΩ, V
OUT
= 0.2V p-p
R
L
= 1kΩ, V
OUT
= 2V p-p
Figure 12. 0.1 dB Flatness for Various Loads and Output Amplitudes
5
–5
1
1000
05538-014
FREQUENCY (MHz)
GAIN (dB)
10 100
4
3
2
1
0
–1
–2
–3
–4
G = 1, C
L
= 2pF
G = 1, C
L
= 10pF, R
SNUB
= 40Ω
G = 2, C
L
= 2pF
G = 2, C
L
= 10pF, R
SNUB
= 40Ω
R
L
= 1kΩ
V
OUT
= 2V p-p
Figure 13. Large Signal Frequency Response at Various Gains and 10 pF
Capacitive Load Buffered by 40 Ω Resistor
3
–7
1 10 100
05538-012
FREQUENCY (MHz)
GAIN (dB)
2
1
0
–1
–2
–3
–4
–5
–6
G = 1
G = 2
V
OUT
= 2V p-p
Figure 14. Large Signal Frequency Response at Various Gains
80
–10
0.001 1000
05538-016
FREQUENCY (MHz)
OPEN LOOP-GAIN (dB)
0.01 0.1 1 10 100
70
50
60
40
30
20
10
0
0
–180
OPEN LOOP-PHASE (Degrees)
–20
–60
–40
–80
–100
–120
–140
–160
MAGNITUDE
PHASE
Figure 15. Open-Loop Gain and Phase Responses