CXA2000 datasheet(6/48 Pages) SONY

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CXA2000Q

Power supply for RGB block.

R2IN

G2IN

B2IN

Analog/digital (dual-purpose) RGB signal

inputs.

The input signals are input via capacitors.

When using analog input, input a 0.7Vp-p

signal (no sync, 100 IRE); when using

digital input, input a signal of at least

1.5Vp-p (Vth = 1.2V).

The display level is 67 IRE. When using

digital input, digital input is selected

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).

30k

200

100µA

RSH

GSH

BSH

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

Connect to GND via a capacitor.

When not using AKB (manual CUTOFF

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

controlled by applying a control voltage to

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

200

ROUT

GOUT

BOUT

R, G and B signal outputs.

2.5Vp-p is output during 100% white

input.

1.1mA

200

12k

IKIN

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

timing.

The input for this pin is the reference

pulse return, and the loop operates so

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.

50µA

SVCC2

No.

Symbol

Equivalent circuit

Description

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