Datasheet

MAX2470/MAX2471
10MHz to 500MHz VCO Buffer Amplifiers
with Differential Outputs
_______________________________________________________________________________________ 5
1.00
1.25
1.50
0 200100 300 400 500
MAX2470
OUTPUT VSWR vs. FREQUENCY
MAX2470/71-10
FREQUENCY (MHz)
OUTPUT VSWR
HI/LO = V
CC
INPUT TERMINATED IN 50Ω
SINGLE-ENDED MEASUREMENT
OUT
OUT
20
40
30
70
60
50
80
90
0 200100 300 400 500
MAX2470
OUTPUT ISOLATION vs. FREQUENCY
MAX2470/71-11
FREQUENCY (MHz)
OUTPUT ISOLATION (dB)
HI/LO = V
CC
SINGLE-ENDED
MEASUREMENT
OUT TO IN
OUT TO IN
OUT TO OUT
INPUT TERMINATED IN 50Ω
-14
-12
-10
-8
-6
-4
-2
0
2
-30 -24 -22-28 -26 -20 -18 -16 -14 -12 -10
MAX2471
OUTPUT POWER vs. INPUT POWER
MAX2470/71-12
INPUT POWER (dBm)
OUTPUT POWER (dBm)
f
IN
= 200MHz
f
IN
= 500MHz
Typical Operating Characteristics (continued)
(V
CC
= +3.0V, MAX2470 output and MAX2471 input and output measurements taken differentially, T
A
= +25°C unless otherwise
noted.)
14.0
14.5
15.0
15.5
16.0
16.5
17.0
17.5
0 150 20050 100 250 300 350 400 450 500
MAX2471
DIFFERENTIAL TRANSDUCER
POWER GAIN vs. FREQUENCY
MAX2470/71-13
FREQUENCY (MHz)
TRANSDUCER POWER GAIN (dB)
T
A
= +25°C
T
A
= +85°C
T
A
= -40°C
7.25
7.50
7.75
8.00
8.25
8.50
0 150 20050 100 250 300 350 400 450 500
MAX2471
NOISE FIGURE vs. FREQUENCY
MAX2470/71-14
FREQUENCY (MHz)
NOISE FIGURE (dB)
1
10
100
1000
10,000
0 150 20050 100 250 300 350 400 450 500
MAX2471
REAL INPUT IMPEDANCE vs. FREQUENCY
MAX2470/71-15
FREQUENCY (MHz)
RE [Z
IN
] (Ω)
-1000
-500
0
500
0 200100 300 400 500
MAX2471
IMAGINARY INPUT IMPEDANCE
vs. FREQUENCY
MAX2470/71-16
FREQUENCY (MHz)
IM [Z
IN
] (Ω)
1.00
1.25
1.50
0 200100 300 400 500
MAX2471
OUTPUT VSWR vs. FREQUENCY
MAX2470/71-17
FREQUENCY (MHz)
OUTPUT VSWR
INPUT TERMINATED
SINGLE-ENDED MEASUREMENT
VSWR OUT
VSWR OUT
20
30
60
50
40
80
70
90
0 200 300100 400 500
MAX2471
OUTPUT ISOLATION vs. FREQUENCY
MAX2470/71-18
FREQUENCY (MHz)
OUTPUT ISOLATION (dB)
OUT TO IN
INPUT TERMINATED IN 50Ω
OUT TO OUT
SINGLE-ENDED
MEASUREMENT