User Manual

Typical Operating Characteristics (continued)
( Typical Application Circuit , V
CC
= +5.0V, LO is low-side injected for a 350MHz IF, P
LO
= 0dBm, P
RF
= -5dBm, T
C
=+25°C, unless
otherwise noted.)
MAX19999
Dual, SiGe High-Linearity, 3000MHz to
4000MHz Downconversion Mixer with LO Buffer
8 _______________________________________________________________________________________
CHANNEL ISOLATION vs. RF FREQUENCY
RF FREQUENCY (MHz)
CHANNEL ISOLATION (dB)
MAX19999 toc19
3000 3200 3400 3600 3800 4000
30
35
40
45
50
T
C
= -30
°
C, +25
°
C, +85
°
C
CHANNEL ISOLATION vs. RF FREQUENCY
RF FREQUENCY (MHz)
CHANNEL ISOLATION (dB)
MAX19999 toc20
300032003400360038004000
30
35
40
45
50
P
LO
= -3dBm, 0dBm, +3dBm
CHANNEL ISOLATION vs. RF FREQUENCY
RF FREQUENCY (MHz)
CHANNEL ISOLATION (dB)
MAX19999 toc21
3000 3200 3400 3600 3800 4000
30
35
40
45
50
V
CC
= 4.75V, 5.0V, 5.25V
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
MAX19999 toc22
2600 2800 3000 3200 3400 3600
-60
-50
-40
-30
-20
-10
0
T
C
= -30
°
C
T
C
= +25
°
C, +85
°
C
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
MAX19999 toc23
260028003000320034003600
-60
-50
-40
-30
-20
-10
0
P
LO
= -3dBm, 0dBm, +3dBm
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
MAX19999 toc24
2600 2800 3000 3200 3400 3600
-60
-50
-40
-30
-20
-10
0
V
CC
= 4.75V, 5.0V, 5.25V
RF-TO-IF ISOLATION vs. RF FREQUENCY
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
MAX19999 toc25
3000 3200 3400 3600 3800 4000
10
20
30
40
T
C
= -30
°
C
T
C
= +25
°
C
T
C
= +85
°
C
RF-TO-IF ISOLATION vs. RF FREQUENCY
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
MAX19999 toc26
300032003400360038004000
10
20
30
40
P
LO
= -3dBm, 0dBm, +3dBm
RF-TO-IF ISOLATION vs. RF FREQUENCY
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
MAX19999 toc27
3000 3200 3400 3600 3800 4000
10
20
30
40
V
CC
= 4.75V, 5.0V, 5.25V