Manual

SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer
MAX19998
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Typical Operating Characteristics (continued)
(Typical Application Circuit with tuning elements outlined in Table 1, V
CC
= 5.0V, f
RF
= 2300MHz to 2900MHz, LO is high-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 toc130
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
35003000
-50
-40
-30
-20
-60
2500 4000
T
C
= +25NC
T
C
= -40NC
T
C
= +85NC
2LO LEAKAGE AT RF PORT vs.
LO FREQUENCY
MAX19998 toc131
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
35003000
-50
-40
-30
-20
-60
2500 4000
P
LO
= 0dBm
P
LO
= -3dBm
P
LO
= +3dBm
2LO LEAKAGE AT RF PORT vs.
LO FREQUENCY
MAX19998 toc132
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
35003000
-50
-40
-30
-20
-60
2500 4000
V
CC
= 5.0VV
CC
= 4.75V
V
CC
= 5.25V
RF FREQUENCY (MHz)
RF PORT RETURN LOSS (dB)
260024502300 29002750
RF PORT RETURN LOSS vs.
RF FREQUENCY
MAX19998 toc133
30
20
10
0
40
P
LO
= -3dBm, 0dBm, +3dBm
f
IF
= 300MHz
IF PORT RETURN LOSS vs.
IF FREQUENCY
IF FREQUENCY (MHz)
IF PORT RETURN LOSS (dB)
410320230140
40
30
20
10
0
50
50 500
MAX19998 toc134
f
LO
= 3000MHz
V
CC
= 4.75V, 5.0V, 5.25V
LO PORT RETURN LOSS (dB)
20
10
0
30
LO PORT RETURN LOSS vs.
LO FREQUENCY
MAX19998 toc135
LO FREQUENCY (MHz)
3650330029502600 4000
P
LO
= 0dBm P
LO
= +3dBm
P
LO
= -3dBm
SUPPLY CURRENT vs.
TEMPERATURE (T
C
)
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
603510-15
210
220
230
240
250
200
-40 85
MAX19998 toc136
V
CC
= 4.75V
V
CC
= 5.0V
V
CC
= 5.25V