Datasheet

MAX9989/MAX9990
+14dBm to +20dBm LO Buffers
with ±1dB Variation
_______________________________________________________________________________________ 7
Typical Operating Characteristics (continued)
(V
CC
= 5.0V, nominal bias, f
IN
= 1800MHz, P
IN
= +9dBm, T
A
= +25°C, unless otherwise noted.) (Shaded regions are outside the
guaranteed operating range, and are provided for reference only.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX9990 toc08
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5.35.14.94.7
105
110
115
120
100
4.5 5.5
PLL BIASED
PLL NOT BIASED
MAX9990 toc09
FREQUENCY (MHz)
GAIN (dB)
210020001600 1700 1800 1900
11
12
13
14
15
16
17
18
10
1500 2200
V
CC
= 5V
P
IN
= -15dBm
NOMINAL BIAS
SMALL-SIGNAL GAIN vs. FREQUENCY
OUTLO
-40°C
+25°C
+85°C
INPUT RETURN LOSS vs. FREQUENCY
MAX9990 toc10
FREQUENCY (MHz)
RETURN LOSS (dB)
210020001900180017001600
-18
-16
-14
-12
-10
-8
-6
-20
1500 2200
V
CC
= 5V
T
A
= +25°C
P
IN
= +9dBm
MAX9990 toc11
FREQUENCY (MHz)
RETURN LOSS (dB)
210020001600 1700 1800 1900
35
30
25
20
15
10
5
0
40
1500 2200
V
CC
= 5V
T
A
= +25°C
P
IN
= +9dBm
OUTPUT RETURN LOSS vs. FREQUENCY
OUTLO
OUTPLL
OUT-TO-IN ISOLATION vs. FREQUENCY
MAX9990 toc12
FREQUENCY (GHz)
ISOLATION (dB)
210020001800 190017001600
60
55
50
45
40
35
30
25
20
15
65
1500 2200
OUTPLL TO IN
OUTLO TO IN
V
CC
= 5V
T
A
= +25°C
P
IN
= +9dBm
PLL ISOLATION vs. FREQUENCY
MAX9990 toc13
FREQUENCY (MHz)
ISOLATION (dB)
210020001800 190017001600
-60
-55
-50
-45
-40
-35
-30
-25
-20
-15
-65
1500 2200
V
CC
= 5V
T
A
= +25°C
P
IN
= +9dBm
PLL TO OUTLO
OUTLO TO PLL
OUTPUT NOISE POWER vs. INPUT POWER
MAX9990 toc14
INPUT POWER (dBm)
NOISE POWER (dBm/Hz)
12111098765
-155
-150
-145
-140
-160
413
±100MHz OFFSET
MAX9990