Datasheet

MAX9985
Dual, SiGe, High-Linearity, 700MHz to 1000MHz
Downconversion Mixer with LO Buffer/Switch
8
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.)
-60
-50
-40
-30
-20
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX9985 toc28
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
500 800 900600 700 1000 1100 1200
T
C
= +85°C
T
C
= -30°C
T
C
= +25°C
-60
-50
-40
-30
-20
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX9985 toc29
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
500 800 900600 700 1000 1100 1200
P
LO
= -3dBm, 0dBm, +3dBm
-20
-30
-40
-50
-60
600500 900700 800 1000 1100 1200
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX9985 toc30
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
V
CC
= 4.75V, 5.0V, 5.25V
-60
-50
-30
-40
-20
-10
500 700600 800 900 1000 1100 1200
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX9985 toc31
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
T
C
= +85°C
T
C
= -30°C
T
C
= +25°C
-60
-50
-30
-40
-20
-10
500 700600 800 900 1000 1100 1200
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX9985 toc32
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
P
LO
= -3dBm
P
LO
= +3dBm
P
LO
= 0dBm
-60
-50
-30
-40
-20
-10
600500 800700 900 1000 1100 1200
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX9985 toc33
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
V
CC
= 4.75V, 5.0V, 5.25V
50
45
40
35
30
600 900700 800 1000 1100 1200
LO SWITCH ISOLATION
vs. RF FREQUENCY
MAX9985 toc34
RF FREQUENCY (MHz)
LO SWITCH ISOLATION (dB)
T
C
= +85°C
T
C
= -30°C
T
C
= +25°C
50
45
40
35
30
600 900700 800 1000 1100 1200
LO SWITCH ISOLATION
vs. RF FREQUENCY
MAX9985 toc35
RF FREQUENCY (MHz)
LO SWITCH ISOLATION (dB)
P
LO
= -3dBm, 0dBm, 3dBm
50
45
40
35
30
600 900700 800 1000 1100 1200
LO SWITCH ISOLATION
vs. RF FREQUENCY
MAX9985 toc36
RF FREQUENCY (MHz)
LO SWITCH ISOLATION (dB)
V
CC
= 4.75V, 5.0V, 5.25V