SiGe, High-Linearity, 850MHz to 1550MHz
Up/Downconversion Mixer with LO Buffer
Typical Operating Characteristics (continued)
(Typical Application Circuit, Downconversion mode , V CC = +5.0V, P LO = 0dBm, P RF = 0dBm, f RF = 1200MHz, LO is high-side
injected, T C = +25°C, unless otherwise noted.)
80
70
RF-TO-IF ISOLATION vs. LO FREQUENCY
(DOWNCONVERSION MODE)
f RF = 1200MHz
80
70
RF-TO-IF ISOLATION vs. LO FREQUENCY
(DOWNCONVERSION MODE)
f RF = 1200MHz
80
70
RF-TO-IF ISOLATION vs. LO FREQUENCY
(DOWNCONVERSION MODE)
f RF = 1200MHz
60
50
T C = +85 ° C
60
50
60
50
40
T C = -40 ° C
T C = +25 ° C
40
P LO = -3dBm, 0dBm, +3dBm
40
V CC = 4.75V, 5.0V, 5.25V
30
20
30
20
30
20
1250
1440
1630
1820
2010
2200
1250
1440
1630
1820
2010
2200
1250
1440
1630
1820
2010
2200
-20
-25
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
(DOWNCONVERSION MODE)
-20
-25
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
(DOWNCONVERSION MODE)
-20
-25
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
(DOWNCONVERSION MODE)
-30
-35
T C = -40 ° C
T C = +25 ° C
-30
-35
P LO = -3dBm, 0dBm, +3dBm
-30
-35
V CC = 4.75V, 5.0V, 5.25V
-40
-45
-50
T C = +85 ° C
-40
-45
-50
-40
-45
-50
1250
1440
1630
1820
2010
2200
1250
1440
1630
1820
2010
2200
1250
1440
1630
1820
2010
2200
LO FREQUENCY (MHz)
RF PORT RETURN LOSS vs. RF FREQUENCY
(DOWNCONVERSION MODE)
LO FREQUENCY (MHz)
RF PORT RETURN LOSS vs. LO FREQUENCY
(DOWNCONVERSION MODE)
LO FREQUENCY (MHz)
IF PORT RETURN LOSS vs. IF FREQUENCY
(DOWNCONVERSION MODE)
0
f IF = 200MHz
0
f IF = 50MHz TO 1000MHz
0
5
5
5
10
15
10
f RF = 1400MHz
f RF = 1300MHz
10
15
V CC = 4.75V, 5.0V, 5.25V
20
P LO = -3dBm, 0dBm, +3dBm
15
f RF = 1200MHz
f RF = 1100MHz
20
25
25
30
20
30
1000
1100
1200
1300
1400
1500
1100
1425
1750
2075
2400
50
240
430
620
810
1000
RF FREQUENCY (MHz)
LO FREQUENCY (MHz)
IF FREQUENCY (MHz)
8
_______________________________________________________________________________________
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