Dual 50MHz to 1000MHz High-Linearity,
Serial/Analog-Controlled VGA
Typical Operating Characteristics (continued)
( Typical Application Circuit , V CC = V CC_AMP_1 = V CC_AMP_2 = V CC_RG = +5V , attenuators are set for maximum gain, RF ports are
driven from 50 I sources, AMPSET = 0, PD_1 = PD_2 = 0, P IN = -20dBm, f RF = 350MHz, and T C = +25 N C, unless otherwise noted.)
50
OUTPUT IP3 vs. ANALOG
ATTENUATOR SETTING
70
2nd HARMONIC vs. RF FREQUENCY
P OUT = 3dBm
70
2nd HARMONIC vs. RF FREQUENCY
P OUT = 3dBm
45
T C = -40°C
LSB, USB
T C = +25°C
LSB, USB
60
T C = +85°C
60
V CC = 5.25V
40
T C = +25°C
V CC = 5.00V
35
30
T C = +85°C
LSB, USB
50
40
T C = -40°C
50
40
V CC = 4.75V
25
P OUT = -3dBm/TONE
RF = 350MHz
20
0
32
64
96
128 160 192 224 256
30
50
250
450
650
850
1050
30
50
250
450
650
850
1050
70
ANALOG ATTENUATOR SETTING (DAC CODE)
2nd HARMONIC vs. ANALOG
ATTENUATOR SETTING
100
RF FREQUENCY (MHz)
3rd HARMONIC vs. RF FREQUENCY
100 0
RF FREQUENCY (MHz)
3rd HARMONIC vs. RF FREQUENCY
65
T C = +25°C
T C = +85°C
P OUT = 0dBm
RF = 350MHz
90
P OUT = 3dBm
90
V CC = 5.25V
P OUT = 3dBm
60
80
T C = -40°C
80
V CC = 5.00V
T C = +25°C
55
70
70
50
T C = -40°C
60
T C = +85°C
60
V CC = 4.75V
45
0
32
64
96
128 160 192 224 256
50
50
250
450
650
850
1050
50
50
250
450
650
850
1050
90
ANALOG ATTENUATOR SETTING (DAC CODE)
3rd HARMONIC vs. ANALOG
ATTENUATOR SETTING
70 0
RF FREQUENCY (MHz)
OIP2 vs. RF FREQUENCY
70 0
RF FREQUENCY (MHz)
OIP2 vs. RF FREQUENCY
80
T C = +25°C
T C = -40°C
P OUT = 0dBm
RF = 350MHz
60
T C = +85°C
P OUT = 0dBm /TONE
60
V CC = 5.25V
P OUT = 0dBm /TONE
50
T C = +25°C
V CC = 5.00V
70
T C = +85°C
40
T C = -40°C
50
V CC = 4.75V
60
30
40
50
0
32
64
96
128 160 192 224 256
20
50
250
450
650
850
1050
30
50
250
450
650
850
1050
ANALOG ATTENUATOR SETTING (DAC CODE)
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
8
______________________________________________________________________________________
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