+14dBm to +20dBm LO Buffers/Splitters
with ±1dB Variation
Typical Operating Characteristics (continued)
(V CC = 5.0V, nominal bias, f IN = 900MHz, P IN = +7dBm, T A = +25°C, unless otherwise noted.) (Shaded regions are outside the
guaranteed operating range, and are provided for reference only.)
MAX9987
SUPPLY CURRENT vs. SUPPLY VOLTAGE
SMALL-SIGNAL GAIN vs. FREQUENCY
INPUT RETURN LOSS vs. FREQUENCY
170
165
160
PLL BIASED
19
18
17
OUT2
V CC = 5.0V
T A = +25 ° C
P IN = -15dBm
NOMINAL BIAS
0
-5
-10
-15
V CC = 5.0V
T A = +25 ° C
P IN = +7dBm
155
16
-20
150
15
OUT1
-25
-30
145
140
PLL NOT BIASED
14
13
-35
-40
4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5
0.5
0.6
0.7
0.8
0.9
1.0
1.1
0.5
0.6
0.7
0.8
0.9
1.0
1.1
0
SUPPLY VOLTAGE (V)
OUTPUT RETURN LOSS vs. FREQUENCY
-20
FREQUENCY (GHz)
IN ISOLATION vs. FREQUENCY
FREQUENCY (GHz)
OUT1 AND OUT2 ISOLATION vs. FREQUENCY
-20
-2
-4
-6
V CC = 5.0V
T A = +25 ° C
P IN = +7dBm
OUT1
-25
-30
-35
V CC = 5.0V
T A = +25 ° C
P IN = +7dBm
-25
-30
-35
OUT1 TO OUT2
V CC = 5.0V
T A = +25 ° C
P IN = +7dBm
-8
-10
-40
-45
PLL TO IN
-40
-45
-12
PLL
-50
-50
-14
-16
OUT2
-55
-60
OUT1 TO IN
OUT2 TO IN
-55
-60
OUT2 TO OUT1
-18
-20
-65
-70
-65
-70
0.5
0.6
0.7
0.8
0.9
1.0
1.1
0.5
0.6
0.7
0.8
0.9
1.0
1.1
0.5
0.6
0.7
0.8
0.9
1.0
1.1
FREQUENCY (GHz)
PLL ISOLATION vs. FREQUENCY
-20
FREQUENCY (GHz)
-140
FREQUENCY (GHz)
OUTPUT NOISE POWER
vs. INPUT POWER
-25
-30
-35
PLL TO OUT_
V CC = 5.0V
T A = +25 ° C
P IN = +7dBm
-145
± 100MHz OFFSET
-40
-45
-50
-55
-60
-65
OUT1 TO PLL
OUT2 TO PLL
-150
-155
-70
0.5
0.6
0.7
0.8
0.9
1.0
1.1
-160
4
5
6
7
8
9
10
FREQUENCY (GHz)
INPUT POWER (dBm)
6
_______________________________________________________________________________________
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