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STV5730

MULTISTANDARD ON-SCREEN DISPLAY FOR VCR, PAY-TV, SATELLITE RECEIVER

STMicroelectronics 

STV5730

TYPICAL PAL/NTSC/SECAM APPLICATION

LUMA FILTER (see Note 1)

TRANSLUCENT MODE

+5V

2.2µF

1

CVBS IN

2

(se e note 4)

3

R1

68Ω

CVBS OUT

28

CHROMA TRAP

27

26

4

10µH

5

S

25

24

+5V

T

6

23

V

7

22

5

8

7

21

CSYNC

(IN or OUT)

Ext. 4 fsc

XTAL

x 4fsc

9

3

20

10

0

19

11

18

OSC IN

(see Note 2)

+5V

12

17

+5V

+5V

(see Note 3)

CHROMA BP FILTER

(see Note 1)

13

16

68Ω

14

15

+5V

TO MICRO

68Ω

+5V

68Ω

+5V

EXTERNAL

RGB

TEXT

INSERTION

(SCART)

68Ω

Digital Ground

Analog Ground

Notes : 1. Optional filter. For low cost applications, short circuit.

2. The 4fsc (17.734MHz PAL, 14.318MHz NTSC) crystal may be ommited if this signal is already available in a system.

3. External bias level can be set by resistor ratio as required. The level at pins LECHAR and LESCREEN must not exceed 3.0 Vdc.

4. Output impedance of the driving stage should be less than 300Ω.

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