Rainbow-electronics MAX3580 Manual de usuario descargar pdf (Pagina 8)

MAX3580

Direct-Conversion TV Tuner

8 _______________________________________________________________________________________

UHF MODE NOISE FIGURE

vs. VOLTAGE GAIN

MAX3580 toc08

VOLTAGE GAIN (dB)

NOISE FIGURE (dB)

60 70 7565 80 85 90

= +25°C

= +55°C

= -40°C

= +85°C

= 620MHz

BB_AGC = 2.85V

100

110

01.00.5 1.5 2.0 2.5 3.0

VOLTAGE GAIN

vs. BB_AGC CONTROL VOLTAGE

MAX3580 toc09

BB_AGC CONTROL VOLTAGE (V)

GAIN (dB)

= +25°C, +55°C

= -40°C

= +85°C

RF_AGC = 2.85V

BASEBAND FILTER REJECTION RATIO

FREQUENCY (MHz)

REJECTION RATIO (dB)

MAX3580 toc10

0 5 10 15 20

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

VHF INPUT

UHF INPUT

NOISE LIMITED

-50

-5

-45

-40

-35

-30

-25

-20

-15

-10

NORMALIZED BASEBAND FREQUENCY

RESPONSE

MAX3580 toc11

FREQUENCY (MHz)

GAIN (dB)

021345

= +25°C

= 0°C

= +85°C

BB_BW<3:0> = "1011"

8MHz CHANNEL MODE

-50

-5

-45

-40

-35

-30

-25

-20

-15

-10

NORMALIZED BASEBAND FREQUENCY

RESPONSE

MAX3580 toc12

FREQUENCY (MHz)

GAIN (dB)

021345

= +25°C

= 0°C

= +85°C

BB_BW<3:0> = "1001"

7MHz CHANNEL MODE

-50

-5

-45

-40

-35

-30

-25

-20

-15

-10

NORMALIZED BASEBAND FREQUENCY

RESPONSE

MAX3580 toc13

FREQUENCY (Hz)

GAIN (dB)

0105152025

= +25°C

= 0°C

= +85°C

BB_BW<3:0> = "1011"

8MHz CHANNEL MODE

NORMALIZED BASEBAND FREQUENCY

RESPONSE

MAX3580 toc14

FREQUENCY (MHz)

GAIN (dB)

0 5 10 15 20 25

-45

-40

-35

-30

-25

-20

-15

-10

-5

= +25°C

= +85°C

= 0°C

BB_BW <3:0> = "1001"

7MHz CHANNEL MODE

Typical Operating Characteristics (continued)

(Typical values are at V

= +3.3V, T

= +25°C, unless otherwise noted.)

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 20 21

Direct-Conversion TV Tuner 1

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Rainbow-electronics MAX3580 Manual de usuario Pagina 8

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