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