Rainbow Electronics MAX19998 - Manual (Page 18)

SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer
MAX19998
18 _____________________________________________________________________________________
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.)
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19998 toc87
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
4100 3900 3700 3500
-30
-20
-10
-40
3000 4300
T C = +25°C
T C = +85°C
T C = -40°C
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19998 toc88
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
4100 3900 3700 3500
-30
-20
-10
-40
3000 4300
P LO = -3dBm, 0dBm, +3dBm
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19998 toc89
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
4100 3900 3700 3500
-30
-20
-10
-40
3000 4300
V CC = 4.75V, 5.0V, 5.25V
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19998 toc90
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 = +85°C
T C = +25°C
RF-TO-IF ISOLATION
vs. RF FREQUENCY
MAX19998 toc91
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 toc92
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 toc93
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
4050 3800 3550
-35
-30
-25
-20
-40
3300 4300
T C = +25°C
T C = -40°C
T C = +85°C
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc94
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
4050 3800 3550
-35
-30
-25
-20
-40
3300 4300
P LO = -3dBm, 0dBm, +3dBm
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19998 toc95
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
4050 3800 3550
-35
-30
-25
-20
-40
3300 4300
V CC = 4.75V, 5.0V, 5.25V