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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.)
MAX2671
MAX2671
MAX2671
LO-TO-RF AND RF-TO-LO ISOLATION
-100
800
IF PORT IMPEDANCE vs. IF FREQUENCY
MAX2671toc07
0
700
RF PORT IMPEDANCE vs. RF FREQUENCY
MAX2671toc08
34
vs. LO or RF FREQUENCY
700
IMAGINARY
-50
600
IMAGINARY
-200
32
LO-TO-RF ISOLATION
POWER INTO LO PORT = -10dBm
600
500
400
300
200
-100
-150
-200
-250
-300
500
400
300
200
-300
-400
-500
-600
30
28
26
24
22
100
REAL
-350
100
REAL
-700
20
RF-TO-LO ISOLATION
POWER INTO RF PORT = -25dBm
0
0
100
200
300
400
-400
500
0
0
500
1000
1500
2000
2500
-800
3000
18
500
1000
1500
2000
2500
IF FREQUENCY (MHz)
MAX2671
CONVERSION GAIN AND OUTPUT
RF FREQUENCY (MHz)
MAX2673
LO AND RF FREQUENCY (MHz)
MAX2673
SHUTDOWN SUPPLY CURRENT
20
10
POWER vs. IF INPUT POWER
CONVERSION GAIN
f RF = 1900MH z
24
23
SUPPLY CURRENT vs. SUPPLY VOLTAGE
10
9
vs. SUPPLY VOLTAGE
SHDN = GND
8
0
f RF = 900MHz
f RF = 2450MHz
22
T A = +85°C
7
-10
-20
-30
-40
f RF = 900MHz
OUTPUT POWER
f RF = 1900MHz
f RF = 2450MHz
f RF f LO f IF
900MHz 970MHz 70MHz
1900MHz 1830MHz 70MHz
2450MHz 2210MHz 240MHz
21
20
19
18
17
T A = +25°C
T A = -40°C
6
5
4
3
2
1
T A = +85°C
T A = -40 °C
T A = +25 °C
-50
-50 -45 -40 -35 -30 -25 -20 -15 -10 -5
0
16
2.5
3.0
3.5
4.0
4.5
5.0
5.5
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
IF INPUT POWER (dBm)
MAX2673
CONVERSION GAIN vs. RF FREQUENCY
SUPPLY VOLTAGE (V)
MAX2673
CONVERSION GAIN vs. IF FREQUENCY
SUPPLY VOLTAGE (V)
MAX2673
CONVERSION GAIN vs. LO POWER
14
V CC = +2.7V
14
f RF = 900MHz
14
12
10
8
V CC = +2.7V
12
10
8
f RF = 1900MHz
f RF = 2450MHz
12
10
8
f RF = 900MHz
6
4
V CC = +5.5 V
6
4
6
f RF = 1900MHz
f RF = 2450MHz
2
0
-2
0
500
RF MATCH f RF
400MHz f RF = f LO - f IF
900MHz f RF = f LO - f IF
1900MHz f RF = f LO + f IF
2450MHz f RF = f LO + f IF
1000 1500 2000
f IF
45MHz
70MHz
70MHz
240MHz
2500 3000
2
0
-2
0
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
50 100 150 200 250 300 350 400 450 500
4
2
0
-25
-20
f RF
900MHz
1900MHz
2450MHz
-15 -10
f LO
970MHz
1830MHz
2210MHz
-5
0
f IF
70MHz
70MHz
240MHz
5
10
RF FREQUENCY (MHz)
IF FREQUENCY (MHz)
LO POWER (dBm)
10
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