Datasheet

MAX9989/MAX9990
+14dBm to +20dBm LO Buffers
with ±1dB Variation
_______________________________________________________________________________________ 5
MAX9989 toc08
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5.35.14.94.7
95
100
105
110
115
120
90
4.5 5.5
SUPPLY CURRENT vs. SUPPLY VOLTAGE
PLL BIASED
PLL NOT BIASED
SMALL-SIGNAL GAIN vs. FREQUENCY
MAX9989 toc09
FREQUENCY (MHz)
GAIN (dB)
11001000900800700600
14
15
16
17
18
19
13
500 1200
V
CC
= 5V
T
A
= +25°C
P
IN
= -15dBm
NOMINAL BIAS
INPUT RETURN LOSS vs. FREQUENCY
MAX9989 toc10
FREQUENCY (MHz)
RETURN LOSS (dB)
1000900600 700 800
-35
-30
-25
-20
-15
-10
-5
0
-40
500 1100
V
CC
= 5V
T
A
= +25°C
P
IN
= +7dBm
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.)
OUTPUT RETURN LOSS vs. FREQUENCY
MAX9989 toc11
FREQUENCY (MHz)
RETURN LOSS (dB)
1000900800700600
18
16
14
12
10
8
6
4
2
0
20
500 1100
V
CC
= 5V
T
A
= +25°C
P
IN
= +7dBm
OUTLO
OUTPLL
OUT-TO-IN ISOLATION vs. FREQUENCY
MAX9989 toc12
FREQUENCY (MHz)
ISOLATION (dB)
1000900800700600
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-70
500 1100
V
CC
= 5V
T
A
= +25°C
P
IN
= +7dBm
OUTPLL TO IN
OUTLO TO IN
PLL ISOLATION vs. FREQUENCY
MAX9989 toc13
FREQUENCY (MHz)
ISOLATION (dB)
1000900800700600
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-70
500 1100
V
CC
= 5V
T
A
= +25°C
P
IN
= +7dBm
OUTPLL TO
OUTLO
OUTLO TO OUTPLL
OUTPUT NOISE POWER vs. INPUT POWER
MAX9989 toc14
INPUT POWER (dBm)
NOISE POWER (dBm/Hz)
12111098765
-155
-150
-145
-140
-160
413
±100MHz OFFSET
MAX9989