6
FN6262.1
March 30, 2007
FIGURE 7. ISL55290 GAIN vs FREQUENCY vs CL
FIGURE 8. ISL55190 GAIN vs FREQUENCY vs Cg
FIGURE 9. ISL55290 GAIN vs FREQUENCY vs Cg
FIGURE 10. DISABLED INPUT IMPEDANCE vs FREQUENCY
FIGURE 11. ENABLED INPUT IMPEDANCE vs FREQUENCY
FIGURE 12. DISABLED OUTPUT IMPEDANCE vs
FREQUENCY
Typical Performance Curves (Continued)
-5
-4
-3
-2
-1
0
1
2
3
4
5
NORMALIZE
D
GAIN
(d
B)
CL = 13.2pF
CL = 8.0pF
CL = 1.2pF
CL = 2.2pF
AV = 5
RL = 1k
Rf = 402
Rg = 100
VOUT = 100mVpp
FREQUENCY (MHz)
.01
0.1
1.0
10
100
1k
FREQUENCY (MHz)
N
O
RMAL
IZED
G
A
IN
(
d
B)
AV = 5
RL = 1k
VOUT = 100mVP-P
Rg = 100
Rf = 402
Cg = 9.0pF
Cg = 7.6pF
Cg = 5.5pF
Cg = 4.1pF
Cg = 3.0pF
Cg = 2.3pF
Cg = 1.8pF
Cg = 0.8pF
.01
0.1
1.0
10
100
1k
-5
-4
-3
-2
-1
0
1
2
3
4
5
-5
-4
-3
-2
-1
0
1
2
3
4
5
FREQUENCY (MHz)
AV = 5
RL = 1k
VOUT = 100mVP-P
Rg = 100
Rf = 402
Cg = 10.5pF
Cg = 8.7pF
Cg = 5.2pF
Cg = 3.8pF
Cg = 2.7pF
Cg = 2.0pF
Cg = 1.6pF
Cg = 0.5pF
.01
0.1
1.0
10
100
1k
NORMALIZED
GAI
N
(
d
B)
1
10
100
1k
10k
100k
1M
10M
DISABLED
INP
U
T
IMPEDANCE
(
Ω
)
AV = 5
RL = 1k
Cg = 1.6pF
Rf = 402
Rg = 100
CL = 1.2pF
FREQUENCY (MHz)
.01
0.1
1.0
10
100
1k
VSOURCE = 500mVP-P
1
10
100
1k
10k
100k
E
N
ABLED
IN
P
U
T
IMPEDANCE
(
Ω
)
AV = 5
RL = 1k
Cg = 1.6pF
Rf = 402
Ri = 100
CL = 1.2pF
FREQUENCY (MHz)
E
N
ABLED
IN
P
U
T
IMPEDANCE
(
Ω
)
AV = 5
RL = 1k
VSOURCE = 500mVP-P
Rf = 402
Ri = 100
.01
0.1
1.0
10
100
1k
10
100
1000
FREQUENCY (MHz)
OU
TP
U
T
IMPEDANCE
(
Ω
)
OUTPUT DISABLED
AV = 5
VSOURCE = 1VP-P
Rf = 402
Rg = 100
.01
0.1
1.0
10
100
1k
ISL55190, ISL55290