Digitally Controlled, Variable-Gain, Differential
ADC Driver/Amplifier
Typical Operating Characteristics (continued)
( Circuit of Figure 2 , V CC = 5.0V, R 1 = 909 Ω , max gain, (B0 = B1 = B2 = B3 = B4 = 0), P OUT = 5dBm, T A = +25°C, unless otherwise
noted.)
INPUT RETURN LOSS vs. RF FREQUENCY
OUTPUT RETURN LOSS vs. FREQUENCY
270
260
SUPPLY CURRENT vs. TEMPERATURE
0
10
(ALL STATES)
0
10
(ALL STATES)
250
V CC = 5.25V
20
20
V CC = 5.0V
240
30
30
230
220
210
V CC = 4.75V
40
50
60
40
50
60
-40
-15
10
35
60
85
30
60
90 120 150 180 210 240 270 300
30
60
90 120 150 180 210 240 270 300
25
TEMPERATURE ( ° C)
GAIN vs. RF FREQUENCY (ALL STATES)
24
FREQUENCY (MHz)
GAIN vs. RF FREQUENCY
24
FREQUENCY (MHz)
GAIN vs. RF FREQUENCY
20
15
10
22
20
18
T A = -40 ° C
22
20
18
V CC = 4.75V
T A = +25 ° C
V CC = 5.25V
5
0
-5
-10
16
14
12
10
T A = +85 ° C
16
14
12
10
V CC = 5.0V
30
60
90 120 150 180 210 240 270 300
30
60
90 120 150 180 210 240 270 300
30
60
90 120 150 180 210 240 270 300
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
FREQUENCY (MHz)
ATTENUATION ABSOLUTE ACCURACY
(ALL STATES)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
FREQUENCY (MHz)
ATTENUATION RELATIVE ACCURACY
(ALL STATES)
40
36
32
28
24
FREQUENCY (MHz)
REVERSE ISOLATION vs. RF FREQUENCY
-1.0
30
60
90 120 150 180 210 240 270 300
-1.0
30
60
90 120 150 180 210 240 270 300
20
30
60
90 120 150 180 210 240 270 300
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
6
_______________________________________________________________________________________
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