CXA2050 Просмотр технического описания (PDF) - Sony Semiconductor

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производитель

CXA2050

Y/C/RGB/D for PAL/NTSC Color TVs

Sony Semiconductor 

Pin

No.

Symbol

39 E-WOUT

CXA2050S

Equivalent circuit

1.4k

15k

39

78k

800µA

Description

V parabola wave output.

40 VAGCSH

40

1.2k

Sample-and-hold for AGC which

maintains the V sawtooth wave at a

constant amplitude.

Connect to GND via a capacitor.

41 SAWOSC

42 DVCC1

43 HD OUT

Connect a capacitor to generate the V

300

sawtooth wave. For the capacitor, use an

41

MPS (metalized polyester capacitor), etc.,

100

with a small tan δ.

Power supply for the V deflection block.

43

147

H drive signal output.

This signal is output with the open

collector.

20k

44 AFCPIN/HOFF

H deflection pulse input for H AFC.

Input an about 5Vp-p pulse via a

capacitor. Set the pulse width to 10 to

12µs. This pin is also used as the hold-

147 10k

down signal input for the HD output, and

44

10k

68k

4.2V if this pin is 1V or less for a 7V cycle or

longer, the hold-down function operates

and the HD output is held to 9VDC. In

addition, the RGB outputs are all blanked.

Outputs “1” to the status register XRAY.

–9–

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