Direct-Conversion TV Tuner

8

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0

10

5

20

15

25

30

UHF MODE NOISE FIGURE

vs. VOLTAGE GAIN

VOLTAGE GAIN (dB)

60

70

75

65

80

85

90

°C

°C

°C

°C

BB_AGC = 2.85V

10

40

30

20

50

60

70

80

90

100

110

01.0

0.5

1.5

2.0

2.5

3.0

VOLTAGE GAIN

vs. BB_AGC CONTROL VOLTAGE

BB_AGC CONTROL VOLTAGE (V)

°C, +55°C

°C

°C

RF_AGC = 2.85V

BASEBAND FILTER REJECTION RATIO

FREQUENCY (MHz)

0

5

10

15

20

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

VHF INPUT

UHF INPUT

NOISE LIMITED

-50

-5

-45

-40

-35

-30

-25

-20

-15

-10

0

5

NORMALIZED BASEBAND FREQUENCY

RESPONSE

FREQUENCY (MHz)

02

13

4

5

°C

°C

°C

BB_BW<3:0> = "1011"

8MHz CHANNEL MODE

-50

-5

-45

-40

-35

-30

-25

-20

-15

-10

0

5

NORMALIZED BASEBAND FREQUENCY

RESPONSE

FREQUENCY (MHz)

02

13

4

5

°C

°C

°C

BB_BW<3:0> = "1001"

7MHz CHANNEL MODE

-50

-5

-45

-40

-35

-30

-25

-20

-15

-10

0

5

NORMALIZED BASEBAND FREQUENCY

RESPONSE

FREQUENCY (Hz)

010

515

20

25

°C

°C

°C

BB_BW<3:0> = "1011"

8MHz CHANNEL MODE

NORMALIZED BASEBAND FREQUENCY

RESPONSE

FREQUENCY (MHz)

0

5

10

15

20

25

-45

-40

-35

-30

-25

-20

-15

-10

-5

0

5

°C

°C

°C

BB_BW <3:0> = "1001"

7MHz CHANNEL MODE

Typical Operating Characteristics (continued)