Datasheet

RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX9984 toc28
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
1000900800
35
40
45
50
55
60
30
700 1100
T
C
= +85°C T
C
= -25°C
T
C
= -40°C
T
C
= +25°C
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX9984 toc29
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
1000900800
35
40
45
50
55
60
30
700 1100
P
LO
= -3dBm, 0dBm, +3dBm
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX9984 toc30
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
1000900800
35
40
45
50
55
60
30
700 1100
V
CC
= 5.25V
V
CC
= 5.0V
V
CC
= 4.75V
RF PORT RETURN LOSS
vs. RF FREQUENCY
MAX9984 toc31
RF FREQUENCY (MHz)
RF PORT RETURN LOSS (dB)
1000900800
25
20
15
10
5
0
30
700 1100
P
LO
= -3dBm, 0dBm, +3dBm
IF PORT RETURN LOSS
vs. IF FREQUENCY
MAX9984 toc32
IF FREQUENCY (MHz)
IF PORT RETURN LOSS (dB)
200100 150 250 300
25
20
15
10
5
0
30
50 350
V
CC
= 4.75V, 5.0V, 5.25V
40
0
50
30
20
10
540 640 840740 940
LO SELECTED RETURN LOSS
vs. LO FREQUENCY
MAX9984 toc33
LO FREQUENCY (MHz)
LO SELECTED RETURN LOSS (dB)
P
LO
= -3dBm
P
LO
= 0dBm
P
LO
= +3dBm
Typical Operating Characteristics (continued)
(MAX9984 Typical Application Circuit, using component values in Table 1, V
CC
= +5.0V, P
LO
= 0dBm, P
RF
= -5dBm, f
RF
> f
LO
, f
IF
=
160MHz, unless otherwise noted.)
MAX9984
SiGe High-Linearity, 400MHz to 1000MHz
Downconversion Mixer with LO Buffer/Switch
_______________________________________________________________________________________ 7
25
0
30
20
15
5
10
540 640 840740 940
LO UNSELECTED RETURN LOSS
vs. LO FREQUENCY
MAX9984 toc34
LO FREQUENCY (MHz)
LO UNSELECTED RETURN LOSS (dB)
P
LO
= -3dBm, 0dBm, +3dBm
220
210
240
200
230
-40 -15 10 35 8560
SUPPLY CURRENT
vs. TEMPERATURE (T
C
)
MAX9984 toc35
TEMPERATURE (
°
C)
SUPPLY CURRENT (mA)
V
CC
= 4.75V
V
CC
= 5.0V
V
CC
= 5.25V