Manual

SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer
MAX19998
14 _____________________________________________________________________________________
Typical Operating Characteristics (continued)
(Typical Application Circuit with tuning elements outlined in Table 1, V
CC
= 3.3V, f
RF
= 3100MHz to 3900MHz, LO is low-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 toc53
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
3500330031002900
-40
-30
-20
-10
-50
2700 3700
T
C
= -40°C, +25°C, +85°C
V
CC
= 3.3V
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19998 toc54
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
3500330031002900
-40
-30
-20
-10
-50
2700 3700
P
LO
= -3dBm, 0dBm, +3dBm
V
CC
= 3.3V
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19998 toc55
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
3500330031002900
-40
-30
-20
-10
-50
2700 3700
V
CC
= 3.0V
V
CC
= 3.3V
V
CC
= 3.6V
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19998 toc56
RF-TO-IF ISOLATION (dB)
20
30
40
50
10
T
C
= -40NC
T
C
= +25NC
T
C
= +85NC
V
CC
= 3.3V
RF FREQUENCY (MHz)
38003600340032003000 4000
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19998 toc57
RF-TO-IF ISOLATION (dB)
20
30
40
50
10
P
LO
= -3dBm, 0dBm, +3dBm
V
CC
= 3.3V
RF FREQUENCY (MHz)
38003600340032003000 4000
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19998 toc58
RF-TO-IF ISOLATION (dB)
20
30
40
50
10
V
CC
= 3.0V, 3.3V, 3.6V
RF FREQUENCY (MHz)
38003600340032003000 4000
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc59
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
350030002500 4000
-35
-30
-25
-20
-40
T
C
= -40°C, +25°C, +85°C
V
CC
= 3.3V
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc60
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
350030002500 4000
-35
-30
-25
-20
-40
P
LO
= -3dBm, 0dBm, +3dBm
V
CC
= 3.3V
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc61
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
350030002500 4000
-35
-30
-25
-20
-40
V
CC
= 3.6V
V
CC
= 3.0V
V
CC
= 3.3V