Datasheet

GainControlVoltage(V)
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Gain(V/V)
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
-0.2
Frequency(Hz)
1M 1G
NormalizedGain(dB)
3
0
-3
-6
-9
-12
10M 100M
V =1V +10mV
G DC PP
V =0.5V
IN DC
Time(10ns/div)
InputV
oltage(V)
OutputVoltage(V)
2.5
2.0
1.5
1.0
0.5
0
-0.5
4
3
2
1
0
-1
V =1V
IN DC
Frequency(Hz)
1M 1G
NormalizedGain(dB)
20
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
10M 100M
V =+2V
G
V =0V
G
V =2V
O PP
InputReferred
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
GainControlVoltage(V)
GroupDelay(ns)
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
10MHz
20MHz
1MHz
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
Frequency(MHz)
GroupDelay(ns)
0 20 40 60 80 100
V =+2V
G
V =1V
O PP
VCA821
www.ti.com ....................................................................................................................................... SBOS407B – DECEMBER 2007 – REVISED DECEMBER 2008
TYPICAL CHARACTERISTICS: V
S
= ± 5V, A
VMAX
= 6dB (continued)
At T
A
= +25 ° C, R
L
= 100 Ω , R
F
= 453 Ω , R
G
= 453 Ω , V
G
= +2V, V
IN
= single-ended input on +V
IN
with – V
IN
at ground, and
SO-14 package, unless otherwise noted.
GAIN vs GAIN CONTROL VOLTAGE GAIN CONTROL FREQUENCY RESPONSE
Figure 23. Figure 24.
GAIN CONTROL PULSE RESPONSE FULLY-ATTENUATED RESPONSE
Figure 25. Figure 26.
GROUP DELAY vs GAIN CONTROL VOLTAGE GROUP DELAY vs FREQUENCY
Figure 27. Figure 28.
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