Datasheet

MAX19985A
Dual, SiGe, High-Linearity, 700MHz to 1000MHz
Downconversion Mixer with LO Buffer/Switch
_______________________________________________________________________________________ 9
CHANNEL ISOLATION vs. RF FREQUENCY
MAX19985A toc19
RF FREQUENCY (MHz)
CHANNEL ISOLATION (dB)
900800
40
35
50
45
55
60
30
700 1000
T
C
= -30
°
C, +25
°
C, +85
°
C
CHANNEL ISOLATION vs. RF FREQUENCY
MAX19985A toc20
RF FREQUENCY (MHz)
CHANNEL ISOLATION (dB)
900800
40
35
50
45
55
60
30
700 1000
P
LO
= -3dBm, 0dBm, +3dBm
CHANNEL ISOLATION vs. RF FREQUENCY
MAX19985A toc21
RF FREQUENCY (MHz)
CHANNEL ISOLATION (dB)
900800
40
35
50
45
55
60
30
700 1000
V
CC
= 4.75V, 5.0V, 5.25V
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19985A toc22
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
1100 11501000 1050950
-40
-45
-30
-35
-25
-20
-50
900 1200
T
C
= -30
°
C
T
C
= +25
°
C, +85
°
C
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19985A toc23
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
1150110010501000950
-45
-40
-35
-30
-25
-20
-50
900 1200
P
LO
= +3dBm
P
LO
= 0dBm
P
LO
= -3dBm
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19985A toc24
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
1150110010501000950
-45
-40
-35
-30
-25
-20
-50
900 1200
V
CC
= 4.75V, 5.0V, 5.25V
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19985A toc25
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
800 900
45
40
35
50
30
700 1000
T
C
= +85
°
C
T
C
= -30°C T
C
= +25°C
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19985A toc26
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
800 900
45
40
35
50
30
700 1000
P
LO
= -3dBm, 0dBm, +3dBm
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19985A toc27
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
800 900
45
40
35
50
30
700 1000
V
CC
= 4.75V, 5.0V, 5.25V
Typical Operating Characteristics (continued)
( Typical Application Circuit , V
CC
= +5.0V, P
LO
= 0dBm, P
RF
= -5dBm, LO is high-side injected for a 200MHz IF, T
C
=+25°C, unless
otherwise noted.)