Rainbow Electronics MAX19995 - Manual (Page 13)

MAX19995
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch
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Typical Operating Characteristics (continued)
( Typical Application Circuit, optimized for the DCS/PCS band, R1 = R4 = 806
Ω, R2 = R5 = 2.32kΩ, V
CC = +5.0V, P LO = 0dBm,
P RF = -5dBm, LO is low-side injected for a 190MHz IF, T C = +25°C, unless otherwise noted.)
CHANNEL ISOLATION vs. RF FREQUENCY
(VARIOUS VALUES OF L3 AND L6)
MAX19995 toc46
RF FREQUENCY (MHz)
CHANNEL ISOLATION (dB)
2500 1900 2100 2300
45
55
50
60
30
35
40
1700
0 Ω
10nH
6.8nH
3.6nH
LO LEAKAGE AT IF PORT vs. LO FREQUENCY
(VARIOUS VALUES OF L3 AND L6)
MAX19995 toc47
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
2300 1700 1900 2100
-40
-30
-20
-60
-50
1500
0 Ω
10nH
6.8nH
3.6nH
RF-TO-IF ISOLATION vs. RF FREQUENCY
(VARIOUS VALUES OF L3 AND L6)
MAX19995 toc48
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
2500 1900 2100 2300
40
50
60
20
30
1700
0 Ω
10nH
6.8nH
3.6nH