400MHz to 2.5GHz Upconverter Mixers
__________________________________________Typical Operating Characteristics
(V = SHDN = +3.0V, Typical Operating Circuits, P = -5dBm (MAX2660/MAX2661/MAX2663), P = -10dBm (MAX2671/MAX2673),
CC
LO
LO
P
IFIN
= -30dBm, T = +25°C, unless otherwise noted.)
A
MAX2660
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX2660
MAX2660
CONVERSION GAIN vs. RF FREQUENCY
SUPPLY CURRENT vs. SUPPLY VOLTAGE
6.0
5.5
10
9
8
7
6
5
4
3
2
1
0
10
8
SHDN = GND
2.7V
2.7V
2.7V
5.5V
2.7V
5.5V
IF
T
= +85°C
= +25°C
6
A
4
5.0
4.5
4.0
3.5
3.0
T
A
2
5.5V
0
T
= -40°C
A
T
= +85°C
A
5.5V
-2
-4
-6
-8
-10
f
f
RF MATCH
400MHz
900MHz
1900MHz
2450MHz
RF
T
= +25°C
A
f
f
f
f
= f - f 45MHz
RF LO IF
= f - f 70MHz
RF LO IF
T
= -40°C
A
= f + f 70MHz
RF LO IF
= f + f 240MHz
RF LO IF
2.50 3.00 3.50 4.00 4.50 5.00 5.50
(V)
500 1000 1500 2000 2500 3000
RF FREQUENCY (MHz)
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V
CC
SUPPLY VOLTAGE (V)
MAX2660
CONVERSION GAIN vs. IF FREQUENCY
MAX2660
MAX2660
CONVERSION GAIN vs. LO POWER
LO PORT RETURN LOSS vs. FREQUENCY
0
-2
8
10
5
f
= 1900MHz
RF
f
= 900MHz
RF
7
6
-4
f
= 900MHz
RF
-6
5
f
RF
= 2450MHz
-8
4
f
= 1900MHz
RF
0
f
= 2450MHz
RF
-10
-12
-14
-16
-18
-20
3
2
-5
1
f
f
RF
IF
f
f
f
IF
RF
LO
f
f
f
= f - f
900MHz
1900MHz
2450MHz
IF LO RF
0
-10
-15
70MHz
70MHz
240MHz
900MHz 970MHz
1900MHz 1830MHz
2450MHz 2210MHz
= f - f
IF RF LO
-1
-2
= f - f
IF RF LO
300
840
1380
1920
2460
3000
0
50 100 150 200 250 300 350 400 450 500
IF FREQUENCY (MHz)
-25 -20 -15 -10
-5
0
5
10
LO FREQUENCY (MHz)
LO POWER (dBm)
MAX2660
LO-to-RF AND RF-to-LO ISOLATION
vs. LO OR RF FREQUENCY
MAX2660
MAX2660
IF PORT IMPEDANCE vs. IF FREQUENCY
RF PORT IMPEDANCE vs. RF FREQUENCY
MAX2660-07
MAX2660-08
0
500
450
400
350
300
250
200
150
100
50
900
-100
-200
-300
-400
25
IMAGINARY
800
700
600
500
400
300
200
100
0
24
23
22
21
20
19
18
17
16
15
IMAGINARY
-100
-200
-300
-400
-500
RF-to-LO ISOLATION
POWER INTO RF PORT = -25dBm
-500
-600
-700
-800
-900
-1000
LO-to-RF ISOLATION
POWER INTO LO PORT = -5dBm
REAL
REAL
0
0
100
200
300
400
500
0
500 1000 1500 2000 2500 3000
500
1000
1500
2000
2500
IF FREQUENCY (MHz)
RF FREQUENCY (MHz)
LO OR RF FREQUENCY (MHz)
6
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