Rainbow Electronics MAX19995 - Manual (Page 16)

MAX19995
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch
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CHANNEL ISOLATION vs. RF FREQUENCY
MAX19995 toc67
RF FREQUENCY (MHz)
CHANNEL ISOLATION (dB)
2300 2100 1900
45
40
35
50
55
60
30
1700 2500
T C = -30 ° C, +25 ° C, +85 ° C
CHANNEL ISOLATION vs. RF FREQUENCY
MAX19995 toc68
RF FREQUENCY (MHz)
CHANNEL ISOLATION (dB)
2300 2100 1900
45
40
35
50
55
60
30
1700 2500
P LO = -3dBm, 0dBm, +3dBm
CHANNEL ISOLATION vs. RF FREQUENCY
MAX19995 toc69
RF FREQUENCY (MHz)
CHANNEL ISOLATION (dB)
2300 2100 1900
45
40
35
50
55
60
30
1700 2500
V CC = 4.75V, 5.0V, 5.25V
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19995 toc70
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
2100 1900 1700
-35
-40
-45
-30
-25
-20
-50
1500 2300
T C = +85 ° C
T C = -30 ° C, +25 ° C
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19995 toc71
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
2100 1900 1700
-35
-40
-45
-30
-25
-20
-50
1500 2300
P LO = -3dBm, 0dBm, +3dBm
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX19995 toc72
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
2100 1900 1700
-35
-40
-45
-30
-25
-20
-50
1500 2300
V CC = 5.25V
V CC = 4.75V
V CC = 5.0V
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX19995 toc73
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
2300 2100 1900
40
35
45
50
30
1700 2500
T
C
= -30 ° C, +25 ° C, +85 ° C
Typical Operating Characteristics (continued)
( Typical Application Circuit, optimized for the UMTS band, R1 = R4 = 681
Ω, R2 = R5 = 1.5kΩ, 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.)
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX19995 toc74
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
2300 2100 1900
40
35
45
50
30
1700 2500
P LO = -3dBm, 0dBm, +3dBm
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX19995 toc75
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
2300 2100 1900
40
35
45
50
30
1700 2500
V CC = 4.75V, 5.0V, 5.25V