Manual

SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer
MAX19998
______________________________________________________________________________________ 15
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.)
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc62
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
350030002500 4000
-40
-30
-20
-10
-50
T
C
= -40NC
T
C
= +25NC
T
C
= +85NC
V
CC
= 3.3V
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc63
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
350030002500 4000
-40
-30
-20
-10
-50
P
LO
= -3dBm, 0dBm, +3dBm
V
CC
= 3.3V
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc64
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
350030002500 4000
-40
-30
-20
-10
-50
V
CC
= 3.6V
V
CC
= 3.3V
V
CC
= 3.0V
RF PORT RETURN LOSS
vs. RF FREQUENCY
MAX19998 toc65
RF FREQUENCY (MHz)
RF PORT RETURN LOSS (dB)
3800360034003200
30
20
10
0
40
3000 4000
P
LO
= -3dBm, 0dBm, +3dBm
V
CC
= 3.3V
f
IF
= 300MHz
IF PORT RETURN LOSS
vs. IF FREQUENCY
IF FREQUENCY (MHz)
IF PORT RETURN LOSS (dB)
40
30
20
10
0
50
MAX19998 toc66
41032023014050 500
f
LO
= 3600MHz
V
CC
= 3.0V, 3.3V, 3.6V
LO PORT RETURN LOSS
vs. LO FREQUENCY
MAX19998 toc67
LO FREQUENCY (MHz)
LO PORT RETURN LOSS (dB)
365033002950
20
10
0
30
2600 4000
P
LO
= -3dBm
P
LO
= 0dBm
P
LO
= +3dBm
V
CC
= 3.3V
SUPPLY CURRENT
vs. TEMPERATURE (T
C
)
MAX19998 toc68
SUPPLY CURRENT (mA)
140
150
160
130
TEMPERATURE (°C)
603510-15-40 85
V
CC
= 3.6V
V
CC
= 3.3V
V
CC
= 3.0V