Rainbow Electronics MAX19998 - Manual (Page 15)

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)
3500 3000 2500 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)
3500 3000 2500 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)
3500 3000 2500 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)
3800 3600 3400 3200
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
410 320 230 140 50 500
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)
3650 3300 2950
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)
60 35 10 -15 -40 85
V CC = 3.6V
V CC = 3.3V
V CC = 3.0V