參數(shù)資料
型號(hào): VCA822IDGS
廠(chǎng)商: Texas Instruments, Inc.
英文描述: Wideband, > 40dB Gain Adjust Range, Linear in V/V VARIABLE GAIN AMPLIFIER
中文描述: 寬帶,“40dB的增益調(diào)整范圍在V,線(xiàn)性音頻/視頻可變?cè)鲆娣糯笃?/td>
文件頁(yè)數(shù): 12/35頁(yè)
文件大小: 837K
代理商: VCA822IDGS
www.ti.com
-
45
-
50
-
55
-
60
-
65
-
70
-
75
-
80
-
85
Frequency (MHz)
Figure 42.
G
0.1
1
10
100
V
G
= +1V
A
VMAX
= +10V/V
V = 2V
R = 100
W
PP
2nd-Harmonic
3rd-Harmonic
-
60
-
65
-
70
-
75
-
80
-
85
-
90
Resistance ( )
Figure 43.
W
H
100
1k
V = +1V
A
VMAX
= +10V/V
V = 2V
f = 20MHz
PP
2nd-Harmonic
3rd-Harmonic
-
55
-
60
-
65
-
70
-
75
-
80
Output Voltage Swing (V
Figure 44.
)
PP
H
0.1
1
10
V = +1V
A
VMAX
= +10V/V
R = 100
W
f = 20MHz
2nd-Harmonic
3rd-Harmonic
-
45
-
50
-
55
-
60
-
65
-
70
Gain Control Voltage (V)
Figure 45.
H
-
0.6
-
0.4
-
0.2
0
0.2
0.4
0.6
0.8
1.0
2nd-Harmonic
V = 2V
= +10V/V
VMAX
R = 100
W
f = 20MHz
PP
A
3rd-Harmonic
Max Current Through
R Limited
40
38
36
34
32
30
28
26
24
22
20
Gain Control Voltage (V)
I
-
0.6
-
0.4
-
0.2
0
0.2
0.4
0.6
0.8
1.0
Constant Input Voltage
Constant Output Voltage
At 50
Matched Load
W
45
40
35
30
25
20
Frequency (MHz)
Figure 46.
I
5
15
20
10
25
30 35
40 45
50 55
60 65
70
At 50
Matched Load
W
VCA822
SBOS343A–SEPTEMBER 2007–REVISED OCTOBER 2007
TYPICAL CHARACTERISTICS: V
S
= ±5V, A
VMAX
= +10V/V (continued)
At T
= +25
°
C, R
L
= 100
, R
F
= 1k
, R
G
= 200
, V
G
= +1V, and V
IN
= single-ended input on +V
IN
with –V
IN
at ground, unless
otherwise noted.
HARMONIC DISTORTION vs FREQUENCY
HARMONIC DISTORTION vs LOAD RESISTANCE
HARMONIC DISTORTION vs
OUTPUT VOLTAGE
HARMONIC DISTORTION vs
GAIN CONTROL VOLTAGE
TWO-TONE, 3RD-ORDER
INTERMODULATION INTERCEPT
TWO-TONE, 3RD-ORDER INTERMODULATION INTERCEPT
vs GAIN CONTROL VOLTAGE (f
IN
= 20MHz)
Figure 47.
12
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