400MHz to 2.5GHz, Low-Noise,
SiGe Downconverter Mixers
Typical Operating Characteristics (continued)
(Typical Operating Circuit, V CC = SHDN = +3.0V, P RFIN = -25dBm, P LO = -5dBm, T A = +25°C, unless otherwise noted.)
0.10
MAX2680
SHUTDOWN SUPPLY
CURRENT vs. SUPPLY VOLTAGE
0.10
MAX2681
SHUTDOWN SUPPLY
CURRENT vs. SUPPLY VOLTAGE
0.10
MAX2682
SHUTDOWN SUPPLY
CURRENT vs. SUPPLY VOLTAGE
0.09
SHDN = GND
0.09
SHDN = GND
0.09
SHDN = GND
0.08
0.08
0.08
0.07
0.06
T A = +25 ° C
T A = +85 ° C
0.07
0.06
T A = +25 ° C
T A = +85 ° C
0.07
0.06
T A = +25 ° C
T A = +85 ° C
0.05
0.04
0.05
0.04
0.05
0.04
0.03
T A = -40 ° C
0.03
T A = -40 ° C
0.03
T A = -40 ° C
0.02
0.01
0
0.02
0.01
0
0.02
0.01
0
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
2.5
3.0
3.5
4.0
4.5
5.0
5.5
15
SUPPLY VOLTAGE (V)
MAX2680
CONVERSION POWER GAIN vs. LO POWER
16
SUPPLY VOLTAGE (V)
MAX2681
CONVERSION POWER GAIN vs. LO POWER
16
SUPPLY VOLTAGE (V)
MAX2682
CONVERSION POWER GAIN vs. LO POWER
13
11
9
f RF = 900MHz
f RF = 2450MHz
f RF = 1950MHz
14
12
10
f RF = 900MHz
f RF = 1950MHz
14
12
10
f RF = 900MHz
f RF = 1950MHz
7
8
8
5
6
f RF = 2450MHz
6
f RF = 2450MHz
3
1
f RF f LO f IF
900MHz 970MHz 70MHz
1950MHz 1880MHz 70MHz
4
2
f RF f LO f IF
900MHz 970MHz 70MHz
1950MHz 1880MHz 70MHz
4
2
f RF f LO f IF
900MHz 970MHz 70MHz
1950MHz 1880MHz 70MHz
-1
2450MHz 2210MHz 240MHz
0
2450MHz 2210MHz 240MHz
0
2450MHz 2210MHz 240MHz
-14
-12
-10
-8
-6
-4
-2
0
-14
-12
-10
-8
-6
-4
-2
0
-14
-12
-10
-8
-6
-4
-2
0
LO POWER (dBm)
MAX2680
CONVERSION POWER GAIN vs. TEMPERATURE
16
LO POWER (dBm)
MAX2681
CONVERSION POWER GAIN vs. TEMPERATURE
16
LO POWER (dBm)
MAX2682
CONVERSION POWER GAIN vs. TEMPERATURE
17
14
12
10
8
f RF = 900MHz
f RF = 1950MHz
14
12
10
8
f RF = 900MHz
f RF = 1950MHz
15
13
11
9
f RF = 900MHz
f RF = 1950MHz
6
4
2
f RF = 2450MHz
f RF f LO f IF
900MHz 970MHz 70MHz
1950MHz 1880MHz 70MHz
6
4
2
f RF = 2450MHz
7
5
3
f RF = 2450MHz
2450MHz 2210MHz 240MHz
0
0
1
-40
-20
0
20
40
60
80
100
-40
-20
0
20
40
60
80
100
-40
-20
0
20
40
60
80
100
TEMPERATURE ( ° C)
TEMPERATURE ( ° C)
TEMPERATURE ( ° C)
_______________________________________________________________________________________
5
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