8

SP5748 Advance Information

300

30

10

1000

2400

FREQUENCY (MHz)

OPERATING

WINDOW

VIN

(mV RMS

INTO 50

Ω)

80

CONTROL

MICRO

15nF

68pF

+30V

+5V

22k

16k

47k

+12V

2n2

BCW31

1n

1n

10n

P1

TUNER

OSCILLATOR

OUTPUT

13k3

P0

CLOCK

DATA

ENABLE

Optional application utilising

on–board crystal controlled

oscillator

1

12

2

3

4

5

6

7

11

10

9

8

13

14

4MHz

18pF

2

3

39pF

REFERENCE

VCO

VCO

10nF

50 - 900MHz

38.9MHz

1650-2700MHz

2

3

10

3

1.6GHz

Figure 9 Typical input sensitivity

Figure 10 Example of double conversion from VHF/UHF frequencies to TV IF

Figure 11 Typical application SP5748

1650 -2400MHz