1300MHz to 2700MHz Variable-Gain
Amplifier with Analog Gain Control
Typical Operating Characteristics (continued)
One Attenuator Configuration
(Typical Application Circuit with one attenuator connected, V CC = +5.0V, R1 = 1.2k ? , R2 = 2k ? , f IN = 2100MHz, maximum gain
setting, P OUT = +5dBm, linearity measured at P OUT = +5dBm/tone, T A = +25°C, unless otherwise noted.)
75
OUTPUT IP2 vs. RF FREQUENCY
70
INPUT IP2 vs. ATTENUATION
70
OUTPUT IP2 vs. ATTENUATION
70
V CC = 5.00V
V CC = 4.75V
65
T A = +85 ° C
T A = +85 ° C
65
60
65
T A = +25 ° C
60
V CC = 5.25V
55
T A = -40 ° C
55
50
T A = +25 ° C
60
T A = -40 ° C
50
45
45
40
55
1500
1700
1900
2100
2300
2500
0
5
10
15
20
0
5
10
15
20
RF FREQUENCY (MHz)
OUTPUT P1dB vs. RF FREQUENCY
26
ATTENUATION (dB)
26
ATTENUATION (dB)
OUTPUT P1dB vs. RF FREQUENCY
25
T A = -40 ° C
T A = +25 ° C
25
V CC = 5.25V
V CC = 5.00V
24
24
23
22
21
20
T A = +85 ° C
23
22
21
20
V CC = 4.75V
1500
1700
1900
2100
2300
2500
1500
1700
1900
2100
2300
2500
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
6
_______________________________________________________________________________________
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