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)
11
10
9
8
7
6
5
4
3
2
1
0
-1
Frequency(Hz)
1M 10M 100M 1G
NormalizedGain(dB)
3
0
-3
-6
-9
-12
V =1V +10mV
G DC PP
Time(10ns/div)
V (V)
IN
V (V)
OUT
2.5
2.0
1.5
1.0
0.5
0
-0.5
2.5
2.0
1.5
1.0
0.5
0
-0.5
5
4
3
2
1
0
-1
-2
-3
-4
-5
OutputCurrent(mA)
OutputVoltage(V)
-300 -200 -100 0 100 200 300
1WInternal
PowerDissipation
1WInternal
PowerDissipation
100W
LoadLine
50W
LoadLine
25W
LoadLine
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
Time(40ns/div)
V (mV)
IN
8
4
0
-4
-8
V (V)
OUT
A =20dB
VMAX
V = 0.3V
G
-
InputVoltage
LeftScale
OutputVoltage
RightScale
6
2
-2
-6
30
20
10
0
-10
-20
-70
Frequency(Hz)
NormalizedGain(dB)
1M 1G
V =+2V
G
10M 100M
V =2V
O
PP
V =0V
G
-30
-40
-50
-60
VCA820
www.ti.com ............................................................................................................................................ SBOS395C –OCTOBER 2007–REVISED OCTOBER 2009
TYPICAL CHARACTERISTICS: V
S
= ±5V, A
VMAX
= 20dB (continued)
At T
A
= +25°C, R
L
= 100Ω, R
F
= 1kΩ, R
G
= 200Ω, V
G
= +2V, and V
IN
= single-ended input on +V
IN
with –V
IN
at ground, unless
otherwise noted.
GAIN vs GAIN CONTROL VOLTAGE GAIN CONTROL FREQUENCY
Figure 47. Figure 48.
GAIN CONTROL PULSE RESPONSE OUTPUT VOLTAGE AND CURRENT LIMITATIONS
Figure 49. Figure 50.
FULLY-ATTENUATED RESPONSE I
RG
LIMITED OVERDRIVE RECOVERY
Figure 51. Figure 52.
Copyright © 2007–2009, Texas Instruments Incorporated Submit Documentation Feedback 13
Product Folder Link(s): VCA820