Rainbow Electronics MAX2673 - Manual (Page 11)

MAX2660/MAX2661/MAX2663/MAX2671/MAX2673
400MHz to 2.5GHz Upconverter Mixers
______________________________________________________________________________________ 11
-18
-20
-14
-16
-10
-12
-6
-8
-4
0
-2
250 800 1350 1900 2450 3000
MAX2673
LO PORT RETURN LOSS vs. LO FREQUENCY
MAX2673toc06
LO FREQUENCY (MHz)
RETURN LOSS (dB)
0
200
100
300
600
700
500
400
-300
-250
-100
-50
-150
-200
50
0
0 100 150 200 250 50 300 350 400 450 500
MAX2673
IF PORT IMPEDANCE vs. IF FREQUENCY
MAX2673toc07
IF FREQUENCY (MHz)
REAL IMPEDANCE (
Ω
)
IMAGINARY IMPEDANCE (
Ω
)
IMAGINARY
REAL
0
100
50
200
150
250
300
350
0 500 1000 1500 2000 2500 3000
MAX2673
RF PORT IMPEDANCE vs. RF FREQUENCY
MAX2673toc08
RF FREQUENCY (MHz)
REAL IMPEDANCE (
Ω
)
-700
-600
-300
-400
-500
-200
-100
0
IMAGINARY IMPEDANCE (
Ω
)
IMAGINARY
REAL
0
5
10
15
25
30
20
35
40
45
500 900 1300 1700 2100 2500
MAX2673
LO-to-RF ISOLATION AND RF-to-LO ISOLATION
vs. LO OR RF FREQUENCY
MAX2673toc09
LO OR RF FREQUENCY (MHz)
ISOLATION (dB)
LO-
POWER INTO LO PORT = -10dBm
RF-TO-LO ISOLATION
POWER INTO RF PORT = -25dBm
TO-RF ISOLATION
-50
-10
-20
-40
-30
0
10
20
-40 -35 -25 -30 -15 -10 -5 -40 -45 -20 0
MAX2673
CONVERSION GAIN AND OUTPUT
POWER vs. IF INPUT POWER
MAX2673toc10
IF INPUT POWER (dBm)
OUTPUT POWER (dBm) AND CONVERSION GAIN (dB)
900MHz
1900MHz
2450MHz
f RF
970MHz
1830MHz
2210MHz
f LO
70MHz
70MHz
240MHz
f IF
f RF = 900MHz
f RF = 1900MHz
f RF = 2450MHz
f RF = 900MHz
f RF = 1900MHz
f RF = 2450MHz
CONVERSION GAIN
OUTPUT POWER
Typical Operating Characteristics (continued)
(V CC = SHDN = +3.0V, Typical Operating Circuits, P LO = -5dBm (MAX2660/MAX2661/MAX2663), P LO = -10dBm (MAX2671/MAX2673),
P IFIN = -30dBm, T
A
= +25°C, unless otherwise noted.)