CXA2019 데이터 시트보기 (PDF) - Sony Semiconductor

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CXA2019

NTSC/PAL Chroma Decoder

Sony Semiconductor 

Pin

No.

Symbol

Pin

voltage

23 – (B_Y) OUT

24 – (R_Y) OUT

5.6V

Equivalent circuit

Vcc Vcc Vcc

23

24

1.2k

25 SVCC

26 X NTSC

27 X 358

28 X443/358

9.0V

—

Vcc

4k

Vcc

26

500

27

28

CXA2019AQ

Description

Color difference signal outputs.

Output as negative polarity.

Standard output levels:

B-Y: 0.665Vp-p

R-Y: 0.525Vp-p

Power supply.

Crystal oscillator connections.

Connect the PALN and 4.43MHz

crystal to Pin 28.

Connect the PALM crystal to Pin 27,

and the NTSC crystal to Pin 26.

29 APC

Vcc

Vcc

1.2k

—

29

1.2k 25k

CR connection for APC lag-lead filter.

30 SECAM REF 1.5V

Vcc

30

Vcc

Vcc

6k 10p

40k

31 S GND

—

When the IC is set to SECAM

identification mode, the 4.43MHz VCO

oscillator waveform is output from this

pin centering on DC 1.5V.

If a 150µA current is led from this pin

during this identification mode, the IC

is set to SECAM mode. In SECAM

mode, the 4.43MHz VCO oscillator

waveform is output centering on

DC = 5V only during the VBLK

interval.

GND.

–7–

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