Manual

SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer
MAX19998
18 _____________________________________________________________________________________
Typical Operating Characteristics (continued)
(Typical Application Circuit with tuning elements outlined in Table 1, V
CC
= 5.0V, f
RF
= 3100MHz to 3900MHz, LO is high-side injected
for a 300MHz IF, P
RF
= -5dBm, P
LO
= 0dBm, T
C
= +25NC, unless otherwise noted.)
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19998 toc87
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
4100390037003500
-30
-20
-10
-40
3000 4300
T
C
= +25°C
T
C
= +85°C
T
C
= -40°C
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19998 toc88
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
4100390037003500
-30
-20
-10
-40
3000 4300
P
LO
= -3dBm, 0dBm, +3dBm
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19998 toc89
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
4100390037003500
-30
-20
-10
-40
3000 4300
V
CC
= 4.75V, 5.0V, 5.25V
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19998 toc90
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
3800360034003200
20
30
40
50
10
3000 4000
T
C
= -40°C
T
C
= +85°C
T
C
= +25°C
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19998 toc91
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
3800360034003200
20
30
40
50
10
3000 4000
P
LO
= -3dBm, 0dBm, +3dBm
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19998 toc92
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
3800360034003200
20
30
40
50
10
3000 4000
V
CC
= 4.75V, 5.0V, 5.25V
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc93
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
405038003550
-35
-30
-25
-20
-40
3300 4300
T
C
= +25°C
T
C
= -40°C
T
C
= +85°C
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc94
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
405038003550
-35
-30
-25
-20
-40
3300 4300
P
LO
= -3dBm, 0dBm, +3dBm
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc95
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
405038003550
-35
-30
-25
-20
-40
3300 4300
V
CC
= 4.75V, 5.0V, 5.25V