REJ03F0191-0201 Rev.2.01 Mar 31, 2008

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M52723ASP

Dynamic Focus

REJ03F0191-0201

Rev.2.01

Mar 31, 2008

Description

The M52723ASP is semiconductor integrated circuit for Multi-Sync display monitors.

It generates horizontal and vertical parabola waves, and it can revise focus of CRT monitors.

Features

• It can control phase of horizontal wave.

• It contains the horizontal saw wave generator and Auto Gain Control circuit, so that it is able to keep the amplitude

constant if frequency change.

• It change the parabola wave inretrace period to constant voltage in order to reduce load at the amplitude after IC.

Application

CRT display monitor

Recommended Operating Condition

Supply voltage range:

11.5 to 12.5 V

Rated supply voltage:

12 V

Block Diagram

H-GND

H-PULSE

INPUT

H-DELAY

CAPACITOR

INPUT

OUTPUT

RESISTOR

AGC

TRACE

CAPACITOR

AGC

RETRACE

CAPACITOR

H-SAW

RETRACE

H-PARA

OUTPUT

INPUT

INPUT

V-PARA

OUTPUT

V-SAW

INPUT

V-GND

INPUT

H-SAW

TRACE

INPUT

20

19

18

17

16

15

14

13

12

11

10

9

8

6

5

4

3

2

1

Para.Amp

Buffer

H-Pulse

Delay

AGC DET

Vref

SW

Para.Amp &

Limiter

Buffer

H-SAW

Generator

7