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400MHz to 2.5GHz Upconverter Mixers
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.)
f RF = 1900MHz
900
800
700
600
MAX2663
RF PORT IMPEDANCE vs. RF FREQUENCY
MAX2663toc08
IMAGINARY
-100
-200
-300
-400
35
30
25
MAX2663
LO-TO-RF AND RF-TO-LO ISOLATION
vs. LO AND RF FREQUENCY
RF-TO-LO ISOLATION
POWER INTO RF PORT = -25dBm
10
5
0
-5
-10
MAX2663
CONVERSION GAIN AND OUTPUT
POWER vs. IF INPUT POWER
f RF = 900MHz        CONVERSION GAIN
f RF = 2450MHz
500
400
300
-500
-600
-700
20
15
LO-TO-RF ISOLATION
POWER INTO LO PORT = -5dBm
-15
-20
-25
-30
f RF = 900MHz
f RF = 1900MHz
OUTPUT
POWER
f RF = 2450MHz
200
100
REAL
-800
-900
10
5
f RF
900MHz
1900MHz
2450MHz
f LO
970MHz
1830MHz
2210MHz
f IF
70MHz
70MHz
240MHz
-35
-40
-45
f RF f LO f IF
900MHz 970MHz 70MHz
1900MHz 1830MHz 70MHz
2450MHz 2210MHz 240MHz
0
-1000
0
-50
0
500
1000
1500
2000
2500
500
1000
1500
2000
2500
-50 -45 -40 -35 -30 -25 -20 -15 -10 -5
0
RF FREQUENCY (MHz)
MAX2671
LO AND RF FREQUENCY (MHz)
MAX2671
SHUTDOWN SUPPLY CURRENT
IF INPUT POWER (dBm)
MAX2671
14
13
12
SUPPLY CURRENT vs. SUPPLY VOLTAGE
T A = +85 ° C
T A = +25 ° C
10
9
8
7
6
vs. SUPPLY VOLTAGE
SHDN = GND
12
10
8
6
CONVERSION GAIN vs. RF FREQUENCY
V CC = +5.5V
11
10
T A = -40 ° C
5
4
3
T A = +85 ° C
T A = +25 ° C
4
2
V CC = +2.7V
RF MATCH f RF
f IF
9
8
2
1
0
T A = -40 ° C
0
-2
-4
400MHz
900MHz
1900MHz
2450MHz
f RF = f LO - f IF
f RF = f LO - f IF
f RF = f LO + f IF
f RF = f LO + f IF
45MHz
70MHz
70MHz
240MHz
2.5
3.0
3.5
4.0
4.5
5.0
5.5
2.5
3.0
3.5
4.0
4.5
5.0
5.5
0
500
1000
1500
2000
2500
3000
SUPPLY VOLTAGE (V)
MAX2671
CONVERSION GAIN vs. IF FREQUENCY
SUPPLY VOLTAGE (V)
MAX2671
CONVERSION GAIN vs. LO POWER
RF FREQUENCY (MHz)
MAX2671
LO PORT RETURN LOSS vs. LO FREQUENCY
12
f RF = 900MHz
12
10
2
0
10
8
6
f RF = 2450MHz
f RF = 1900MHz
8
6
4
2
f RF = 900MHz
f RF = 1900MHz
f RF = 2450MHz
-2
-4
-6
-8
0
-10
4
2
f RF f IF
900MHz f IF = f LO - f RF
1900MHz f IF = f RF - f LO
2450MHz f IF = f RF - f LO
-2
-4
-6
f RF
900MHz
1900MHz
2450MHz
f LO
970MHz
1830MHz
2210MHz
f IF
70MHz
70MHz
240MHz
-12
-14
-16
0
0
50 100 150 200 250 300 350 400 450 500
-8
-35 -30 -25 -20 -15 -10
-5
0
5
10
-18
250
800
1350
1900
2450
3000
IF FREQUENCY (MHz)
LO INPUT POWER (dBm)
LO FREQUENCY (MHz)
_______________________________________________________________________________________
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