MAX3509(2000) Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX3509 Datasheet PDF : 12 Pages
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Upstream CATV Amplifier
Typical Operating Characteristics (continued)
(MAX3509 EV kit, VCC1 = VCC2 = +9V, VIN = +34dBmV, TXEN = SHDN = high, D7 = 1, fINPUT = 10MHz, ZLOAD = 75Ω through a 1:1
transformer, TA = +25°C, unless otherwise noted.)
VOLTAGE GAIN vs. FREQUENCY
50
40
A
B
30
C
20
10
D
0
E
-10
F
G
-20
-30
GAIN CONTROL WORD
A = 63, B = 57, C = 48,
-40 D = 36, E = 24, F = 12,
G=6
-50
5
10
100
500
FREQUENCY (MHz)
40
30
20
10
0
-10
-20
-30
0
VOLTAGE GAIN
vs. CONTROL WORD
10MHz
60MHz
10 20 30 40 50 60
CONTROL WORD (DECIMAL)
GAIN STEP
vs. CONTROL WORD
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0
10 20 30 40 50 60
CONTROL WORD (DECIMAL)
TRANSMIT OUTPUT NOISE vs. GAIN
-20
-22
-24
-26
-28
-30
-32
-34
-36
-38
-40
-42
-24 -14 -4 6 16 26 36
GAIN (dB)
POWER-UP/DOWN TRANSIENTS
vs. CONTROL WORD
100
10
1
0
10 20 30 40 50 60 70
CONTROL WORD
2ND HARMONIC DISTORTION
vs. INPUT FREQUENCY
-58
66dBmV
-62
60dBmV
-66
-70
-74
0
10 20 30 40 50 60 70
FREQUENCY (MHz)
2ND HARMONIC DISTORTION
vs. INPUT FREQUENCY
-50
-55
10dBmV
-60
30dBmV
-65
-70
-75
-80
0
10 20 30 40 50 60 70
FREQUENCY (MHz)
3RD HARMONIC DISTORTION vs.
INPUT FREQUENCY AND OUTPUT POWER
-40
-45
66dBmV
-50
60dBmV
-55
-60
30dBmV
-65
-70
10dBmV
-75
-80
-85
-90
0 10 20 30 40 50 60 70
FREQUENCY (MHz)
QPSK OUTPUT SPECTRUM
-10
-20
VOUT = 66dBmV
1280 ks/s
-30 α = 0.25
-40
-50
-60
-70
-80
-90
-100
CENTER 22MHz
-110
500kHz/div
SPAN 5MHz
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