Dual 50MHz to 1000MHz High-Linearity,
Serial/Parallel-Controlled Digital VGA
Typical Operating Characteristics (continued)
( Typical Application Circuit , V CC = V CC_AMP_1 = V CC_AMP_2 = V CC_RG = 3.3V , attenuators are set for maximimum gain, RF ports are
driven from 50ω sources, AMPSET = 1, PD_1 = PD_2 = 0, P IN = -20dBm, f RF = 350MHz, T C = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. V CC
GAIN vs. RF FREQUENCY
GAIN vs. RF FREQUENCY
120
24
V CC = 3.3V
24
110
100
T C = -40°C
T C = +25°C
22
T C = -40°C
T C = +25°C
22
V CC = 3.465V
V CC = 3.3V
90
80
20
T C = +85°C
20
V CC = 3.135      V
18
18
70
T C = +85°C
60
3.1
3.2
3.3
3.4
3.5
16
50
250
450
650
850
1050
16
50
250
450
650
850
1050
V CC (V)
INPUT MATCH OVER ATTENUATOR
SETTING vs. RF FREQUENCY
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
OUTPUT MATCH OVER ATTENUATOR
SETTING vs. RF FREQUENCY
0
V CC = 3.3V
0
V CC = 3.3V
-10
-20
16dB
8dB
0dB
-10
-20
2dB
1dB
16dB, 31dB
-30
2dB
-40
31dB
4dB
1dB
-30
4dB
8dB
-50
50
250
450
650
850
1050
-40
50
250
0dB
450
650
850
1050
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
9
8
7
6
5
4
3
NOISE FIGURE vs. RF FREQUENCY
V CC = 3.3V
T C = +85°C
T C = +25°C
T C = -40°C
9
8
7
6
5
4
3
NOISE FIGURE vs. RF FREQUENCY
V CC = 3.135V
V CC = 3.3V
V CC = 3.465V
2
50
250
450 650
RF FREQUENCY (MHz)
850
1050
2
50
250
450 650
RF FREQUENCY (MHz)
850
1050
10
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