Datasheet

MAX9985
Dual, SiGe, High-Linearity, 700MHz to 1000MHz
Downconversion Mixer with LO Buffer/Switch
7
Maxim Integrated
Typical Operating Characteristics (continued)
(Using the Typical Application Circuit , V
CC
= 5.0V, P
LO
= 0dBm, P
RF
= -5dBm, f
RF
> f
LO
, f
IF
= 100MHz, T
C
= +25°C, unless other-
wise noted.)
30
40
35
50
45
55
60
700 800 900 1000
CHANNEL ISOLATION vs. RF FREQUENCY
MAX9985 toc19
RF FREQUENCY (MHz)
CHANNEL ISOLATION (dB)
T
C
= -30°C , +25°C , +85°C
30
40
35
50
45
55
60
700 800 900 1000
CHANNEL ISOLATION vs. RF FREQUENCY
MAX9985 toc20
RF FREQUENCY (MHz)
CHANNEL ISOLATION (dB)
P
LO
= -3dBm, 0dBm, +3dBm
30
40
35
50
45
55
60
700 800 900 1000
CHANNEL ISOLATION vs. RF FREQUENCY
MAX9985 toc21
RF FREQUENCY (MHz)
CHANNEL ISOLATION (dB)
V
CC
= 4.75V, 5.0V, 5.25V
-40
-30
-35
-20
-25
-15
-10
LO LEAKAGE AT IF PORT vs. LO FREQUENCY
MAX9985 toc22
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
600 700 750650 800 850 900
T
C
= +85°C
T
C
= +25°C
T
C
= -30°C
-40
-30
-35
-20
-25
-15
-10
LO LEAKAGE AT IF PORT vs. LO FREQUENCY
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
600 700 750650 800 850 900
P
LO
= -3dBm
P
LO
= +3dBm
P
LO
= 0dBm
MAX9985 toc23
-40
-30
-35
-20
-25
-15
-10
LO LEAKAGE AT IF PORT vs. LO FREQUENCY
MAX9985 toc24
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
600 700 750650 800 850 900
V
CC
= 4.75V
V
CC
= 5.25V
V
CC
= 5.0V
30
40
35
50
45
55
60
700 800 900 1000
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX9985 toc25
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
T
C
= +85°C
T
C
= -30°C
T
C
= +25°C
30
40
35
50
45
55
60
700 800 900 1000
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX9985 toc26
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
P
LO
= -3dBm, 0dBm, +3dBm
30
40
35
50
45
55
60
700 800 900 1000
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX9985 toc27
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
V
CC
= 4.75V, 5.0V, 5.25V