Rainbow Electronics MAX19998 - Manual (Page 19)

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 = 3100MHz to 3900MHz, LO is high-side injected
for a 300MHz IF, P RF = -5dBm, P LO = 0dBm, T C = +25NC, unless otherwise noted.)
IF PORT RETURN LOSS
vs. IF FREQUENCY
MAX19998 toc10
0
IF FREQUENCY (MHz)
IF PORT RETURN LOSS (dB)
410 320 230 140
40
30
20
10
0
50
50 500
V CC = 4.75V, 5.0V, 5.25V
f LO = 4100MHz
LO PORT RETURN LOSS
vs. LO FREQUENCY
MAX19998 toc10
1
LO FREQUENCY (MHz)
LO PORT RETURN LOSS (dB)
3900 3500 3100
20
10
0
30
2700 4300
P LO = 0dBm
P LO = +3dBm
P LO = -3dBm
SUPPLY CURRENT
vs. TEMPERATURE (T C )
MAX19998 toc102
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
60 35 10 -15
210
220
230
240
250
200
-40 65
V CC = 4.75V
V CC = 5.25V
V CC = 5.0V
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc96
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
4050 3800 3550
-30
-20
-10
-40
3300 4300
T C = +25°C
T C = +85°C
T C = -40°C
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc97
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
4050 3800 3550
-30
-20
-10
-40
3300 4300
P LO = 0dBm
P LO = -3dBm
P LO = +3dBm
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc98
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
4050 3800 3550
-30
-20
-10
-40
3300 4300
V CC = 4.75V, 5.0V, 5.25V
RF PORT RETURN LOSS
vs. RF FREQUENCY
MAX19998 toc99
RF FREQUENCY (MHz)
RF PORT RETURN LOSS (dB)
3800 3600 3400 3200
30
20
10
0
40
3000 4000
f IF = 300MHz
P LO = -3dBm, 0dBm, +3dBm