Upstream CATV Amplifiers

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11

Typical Operating Characteristics (continued)

otherwise noted.)

MAX3514/MAX3517 (continued)

-80

-70

-75

-60

-65

-55

-50

030

40

10

20

50

60

70

2ND HARMONIC DISTORTION

vs. INPUT FREQUENCY

INPUT FREQUENCY (MHz)

6dBmV, LN

20dBmV, LN

50dBmV, HP

61dBmV, HP

-80

-70

-75

-60

-65

-55

-50

030

40

10

20

50

60

70

3RD HARMONIC DISTORTION

vs. INPUT FREQUENCY

INPUT FREQUENCY (MHz)

6dBmV, LN

20dBmV, LN

50dBmV, HP

61dBmV, HP

0.1

0

140

80

40

POWER-UP/DOWN TRANSIENTS

vs. GAIN CODE

1

10

100

GAIN CODE

20

60

100

120

HIGH-POWER MODE

LOW-NOISE MODE

0

-16

1

10

100

OUTPUT RETURN LOSS vs. FREQUENCY

(75

Ω SYSTEM)

-12

-14

FREQUENCY (MHz)

-8

-10

-6

-4

-2

HIGH-POWER MODE

LOW-NOISE MODE/

TRANSMIT DISABLE

OUTPUT IMPEDANCE

(75

Ω SYSTEM)

LOW NOISE MODE/

TRANSMIT DISABLE MODE

HIGH-POWER MODE

-100

-80

-90

-60

-70

-40

-50

-30

-10

-20

0

500kHz/div

OUTPUT SPECTRUM

VOUT = 61dBmV

α = 0.25

1280ksps

-100

-80

-90

-60

-70

-40

-50

-30

-10

-20

0

100kHz/div

OUTPUT SPECTRUM

VOUT = 61dBmV

α = 0.25

160ksps

-100

-80

-90

-60

-70

-40

-50

-30

-10

-20

0

5.5MHz/div

OUTPUT SPECTRUM

VOUT = 61dBmV

α = 0.25

1280ksps