300MHz to 2500MHz SiGe
Ultra-Low-Noise Amplifiers
Typical Operating Characteristics (continued)
(V
= +3V, P
= -34dBm, Typical Operating Circuits, T = +25°C, unless otherwise noted.)
CC
RFIN
A
MAX2640 MATCHED AT 900MHz
INPUT RETURN LOSS AND
MAX2640 MATCHED AT 900MHz
MAX2641
OUTPUT RETURN LOSS vs. FREQUENCY
REVERSE ISOLATION vs. FREQUENCY
SUPPLY CURRENT vs. SUPPLY VOLTAGE
-6
-7
0
-10
-20
-30
-40
6
5
4
3
2
1
0
-8
T
= +85°C
A
-9
INPUT RETURN LOSS
-10
-11
-12
-13
-14
-15
-16
T
= +25°C
A
T
= -40°C
A
-50
-60
OUTPUT RETURN LOSS
800
850
900
950
1000
800
840
880
920
960
1000
2
3
4
5
6
FREQUENCY (MHz)
FREQUENCY (MHz)
V
(V)
CC
MAX2641 MATCHED AT 1900MHz
GAIN vs. FREQUENCY
MAX2641 MATCHED AT 1900MHz
NOISE FIGURE vs. FREQUENCY
3
2
1
0
16
15
14
13
12
T
= -40°C
A
T
= +85°C
A
T
= +25°C
A
T
= +85°C
A
T
= +25°C
A
T
= -40°C
A
1800
1840
1880
1920
1960
2000
1800
1840
1880
1920
1960
2000
FREQUENCY (MHz)
FREQUENCY (MHz)
MAX2641 MATCHED AT 1900MHz
INPUT RETURN LOSS AND
OUTPUT RETURN LOSS vs. FREQUENCY
MAX2641 MATCHED AT 1900MHz
REVERSE ISOLATION vs. FREQUENCY
-6
-7
0
-10
-20
-30
-40
-8
-9
-10
-11
-12
-13
-14
-15
-16
INPUT RETURN LOSS
OUTPUT RETURN LOSS
-50
-60
1800
1840
1880
1920
1960
2000
1800
1850
1900
1950
2000
FREQUENCY (MHz)
FREQUENCY (MHz)
4
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