Datasheet

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SBOS316D − JULY 2005 − REVISED OCTOBER 2008
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14
TYPICAL CHARACTERISTICS (continued)
All specifications at T
A
= +25°C, V
DD
= 5V, load resistance = 500Ω on each output to ground; the input to the preamp (LNP) is single-ended;
f
IN
= 5MHz, LNP Gain (G1, G2) = 10, H
/L = 0, V
CNTL
= 2.5V; VCA output is 1V
PP
differential; CA, CB = 3.9µF, unless otherwise noted.
Figure 49
OUTPUT IMPEDANCE vs FREQUENCY
Frequency (MHz)
0.1
R
OUT
(
Ω
)
100
10
1
1 10 100
Figure 50
POWER UP/DOWN RESPONSE
Time (
µ
s)
25 30 35 40 45 50 605520510150
H
L
PD Pin
VGA Output (V)
1V
PP
Figure 51
GAIN CONTROL TRANSIENT RESPONSE
1V
PP
Time (
µ
s)
1.5 1.8 2.1 2.4 2.7 3.00.9 1.20.3 0.60
2V
0V
V
CNTL
(V)
VGA Output (V)
Figure 52
35
30
25
20
15
10
5
0
GROUP DELAY vs FREQUENCY
Frequency (MHz)
101100
Group Delay (ns)