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TDA9203A

I

2

C BUS CONTROLLED 70MHz RGB PREAMPLIFIER

.

.

.

.

.

.

.

.

.

.

.

70MHz TYPICAL BANDWIDTH AT 4V

PP

OUT-

PUT WITH 12pF CAPACITIVE LOAD

5.5ns TYPICAL RISE/FALL TIME AT 4V

PP

OUTPUT WITH 12pF CAPACITIVE LOAD

POWERFULL OUTPUT DRIVE CAPABILITY

BRT, CONT, DRIVE, OUTPUT DC LEVEL,

OSD CONTRAST, BACK-PORCH CLAMPING

PULSE WIDTH ARE I

2

C BUS CONTROLLED

INTERNAL

BACK-PORCH

CLAMPING

PULSE GENERATOR

OSD WHITE BALANCE TRACKING

INTERNAL OSD SWITCHES

BLANKING AND FAST-BLANKING INPUTS

VERY LARGE DRIVE ADJUSTMENT RANGE

(48dB)

SEMI-TRANSPARENT BACKGROUND ON

OSD PICTURE

ABL CONTROL

SHRINK 24

(Plastic Package)

ORDER CODE :

TDA9203A

PIN CONNECTIONS

DESCRIPTION

The TDA9203A is a digitaly controlled wideband

video preamplifier intended for use in mid range

color monitor. All controls and adjustments are

digitaly performed thanks to I

2

C serial bus. Con-

trast, brightness and DC output level of RGB sig-

nals are common to the 3 channels and drive

adjustment is separate for each channel.Three I

2

C

gain controlled OSD inputs can be switched with

RGB signals using fast blanking command. Clamp-

ing of RGB signals is performed thanks to a flexible

integrated system. The white balance adjustment

is effective on brightness, video and OSD signals.

The TDA9203A works for application using AC or

DC coupled CRT driver.

The ABL input provides a 12dB Max. attenuation

on the current contrast value according average

beam limitation voltage.

Because of its features and due to component

saving the TDA9203A leads to a very performant

and cost effective application.

June 1998

IN1

OSD1

AV

DD

IN2

OSD2

AGND

IN3

OSD3

ABL

LGND

SDA

SCL

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

HSYNC

PV

CC1

OUT1

PGND1

PV

CC2

OUT2

PGND2

PV

CC3

OUT3

PGND3

BLK

FBLK

9203A-01.EPS

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