Rainbow Electronics MAX19998 - Manual (Page 10)

SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer
MAX19998
10 _____________________________________________________________________________________
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 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 toc19
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
3500 3300 3100 2900
-30
-20
-10
-40
2700 3700
T C = +85°C
T C = -40°C
T C = +25°C
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19998 toc20
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
3500 3300 3100 2900
-30
-20
-10
-40
2700 3700
P LO = -3dBm, 0dBm, +3dBm
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19998 toc21
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
3500 3300 3100 2900
-30
-20
-10
-40
2700 3700
V CC = 4.75V, 5.0V, 5.25V
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19998 toc22
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
3800 3600 3400 3200
20
30
40
50
10
3000 4000
T C = -40°C
T C = +25°C
T C = +85°C
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19998 toc23
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
3800 3600 3400 3200
20
30
40
50
10
3000 4000
P LO = -3dBm, 0dBm, +3dBm
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19998 toc24
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
3800 3600 3400 3200
20
30
40
50
10
3000 4000
V CC = 4.75V, 5.0V, 5.25V
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc25
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
3500 3000
-35
-30
-25
-20
-40
2500 4000
T C = +25°C
T C = +85°C
T C = -40°C
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc26
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
3500 3000
-35
-30
-25
-20
-40
2500 4000
P LO = -3dBm, 0dBm, +3dBm
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc27
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
3500 3000
-35
-30
-25
-20
-40
2500 4000
V CC = 4.75V, 5.0V, 5.25V