MAX2681 MAXIM [Maxim Integrated Products], MAX2681 Datasheet - Page 7

• Manufacturer Part Number: MAX2681
• Description: 400MHz to 2.5GHz, Low-Noise, SiGe Downconverter Mixers
• Manufacturer: MAXIM [Maxim Integrated Products]

1200
1000
800
600
400
200
(Typical Operating Circuit, V
0
IF PORT IMPEDANCE vs. IF FREQUENCY
0
+10
-10
-15
-20
-25
-30
-35
-40
+5
35
30
25
20
15
10
-5
0
5
0
200
100
0
LO-to-IF AND LO-to-RF ISOLATION
IF FREQUENCY (MHz)
LO-to-RF ISOLATION
760
500
200
MAX2680
LO PORT RETURN LOSS
LO FREQUENCY (MHz)
FREQUENCY (MHz)
1320
1000
MAX2680
300
MAX2680
_______________________________________________________________________________________
IMAGINARY
f
P
LO
LO
1880
1500
REAL
LO-to-IF ISOLATION
400
= 970MHz
MAX2680/1/2-22
= -5dBm
CC
= SHDN = +3.0V, P
2440
2000
500
0
-100
-200
-300
-400
-500
-600
3000
2500
1200
1000
800
600
400
200
0
400MHz to 2.5GHz, Low-Noise,
IF PORT IMPEDANCE vs. IF FREQUENCY
0
Typical Operating Characteristics (continued)
+10
-10
-15
-20
-25
-30
-35
-40
+5
40
-5
35
30
25
20
15
10
0
5
0
RFIN
200
0
100
LO-to-IF AND LO-to-RF ISOLATION
SiGe Downconverter Mixers
= -25dBm, P
IF FREQUENCY (MHz)
LO-to-RF ISOLATION
760
500
LO PORT RETURN LOSS
200
MAX2681
LO FREQUENCY (MHz)
FREQUENCY (MHz)
1320
1000
IMAGINARY
MAX2681
MAX2681
300
LO
1880
LO-to-IF ISOLATION
1500
REAL
f
P
= -5dBm, T
LO
LO
400
MAX2680/1/2-23
= 970MHz
= -5dBm
2440
2000
500
0
-100
-200
-300
-400
-500
-600
A
3000
2500
= +25°C, unless otherwise noted.)
800
700
600
500
400
300
200
100
0
+10
-10
-15
-20
-25
-30
-35
-40
+5
-5
35
10
30
25
20
15
IF PORT IMPEDANCE vs. IF FREQUENCY
0
0
200
0
LO-to-IF AND LO-to-RF ISOLATION
100
760
LO-to-RF ISOLATION
500
LO PORT RETURN LOSS
IF FREQUENCY (MHz)
LO FREQUENCY (MHz)
200
MAX2682
FREQUENCY (MHz)
1320
1000
MAX2682
MAX2682
300
LO-to-IF ISOLATION
IMAGINARY
1880
1500
f
P
LO
LO
400
REAL
MAX2680/1/2-24
= 970MHz
= -5dBm
2440
2000
500
3000
2500
0
-50
-100
-150
-200
-250
-300
-350
-400
7