CXA2000 데이터 시트보기 (PDF) - Sony Semiconductor

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CXA2000

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

Sony Semiconductor 

Pin

No.

Symbol

17 R2IN

18 G2IN

19 B2IN

20 SVCC2

21 RSH

23 GSH

25 BSH

CXA2000Q

Equivalent circuit

Description

Analog/digital (dual-purpose) RGB signal

inputs.

The input signals are input via capacitors.

100µA When using analog input, input a 0.7Vp-p

signal (no sync, 100 IRE); when using

200

digital input, input a signal of at least

17

1.5Vp-p (Vth = 1.2V).

18

The display level is 67 IRE. When using

19

digital input, digital input is selected

30k

regardless of the YS setting.

In addition, the VM output is turned off.

These pins are clamped to 5.7V at the

burst timing of the signal input to the

sync input pin (Pin 47).

Power supply for RGB block.

200

Sample-and-hold for R, G and B AKB.

21

Connect to GND via a capacitor.

23

When not using AKB (manual CUTOFF

mode), R, G and B cut-off voltage can be

25

controlled by applying a control voltage to

each pin. The control voltage is 4.5 ± 1V.

22 ROUT

24 GOUT

26 BOUT

27 IKIN

200

22

R, G and B signal outputs.

2.5Vp-p is output during 100% white

24

12k

input.

26

1.1mA

Input the signal converted from the CRT

beam current (cathode current Ik) to a

voltage via a capacitor. The V blanking

part is clamped to 2.7V at the V retrace

1k

timing.

27

The input for this pin is the reference

pulse return, and the loop operates so

50µA

that the Rch is 1Vp-p and the G and Bch

are 0.81Vp-p. The G and Bch can be

varied by ±0.5V by the bus CUTOFF

control. When not using AKB, this pin

should be open.

–6–

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