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M52723ASP

Dynamic Focus

Renesas Electronics 

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

V-VCC

20

VHS

INPUT

19

H-GND

18

H-PULSE H-DELAY

VPH

INPUT CAPACITOR INPUT

17

16

15

VREF

OUTPUT

14

AGC

VREF

TRACE

RESISTOR CAPACITOR

13

12

AGC

RETRACE

CAPACITOR

11

H-Pulse

Delay

Vref

AGC DET

Para.Amp

X2

Buffer

X2

SW

Para.Amp &

Limiter

Buffer

H-SAW

Generator

1

V-GND

2

V-SAW

INPUT

3

VREF

INPUT

4

V-PARA

OUTPUT

5

VGV

INPUT

6

VGH

INPUT

7

8

H-PARA H-SAW

OUTPUT RETRACE

9

H-SAW

TRACE

10

H-VCC

REJ03F0191-0201 Rev.2.01 Mar 31, 2008

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