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TDA9112

LOW-COST I

2

C CONTROLLED DEFLECTION PROCESSOR

FOR MULTISYNC MONITOR

FEATURES

General

2

s

ADVANCED I C BUS CONTROLLED

DEFLECTION PROCESSOR DEDICATED

FOR HIGH-END CRT MONITORS

s

SINGLE SUPPLY VOLTAGE 12V

s

VERY LOW JITTER

s

DC/DC CONVERTER CONTROLLER

s

ADVANCED EW DRIVE

s

ADVANCED ASYMMETRY CORRECTIONS

s

AUTOMATIC MULTISTANDARD

SYNCHRONIZATION

s

2 DYNAMIC CORRECTION WAVEFORM

OUTPUTS

s

X-RAY PROTECTION AND SOFT-START &

STOP ON HORIZONTAL AND DC/DC DRIVE

OUTPUTS

2

s

I C BUS STATUS REGISTER

Horizontal section

s

150 kHz maximum frequency

s

Corrections of geometric asymmetry: Pin

cushion asymmetry, Parallelogram, separate

Top/Bottom corner asymmetry

s

Tracking of asymmetry corrections with vertical

size and position

s

Fully integrated horizontal moir茅 cancellation

Vertical section

s

200 Hz maximum frequency

s

Vertical ramp for DC-coupled output stage with

adjustments of: C-correction, S-correction for

super-flat CRT, Vertical size, Vertical position

s

Vertical moir茅 cancellation through vertical

ramp waveform

s

Compensation of vertical breathing with EHT

variation

EW section

s

Symmetrical geometry corrections: Pin cushion,

Keystone, Top/Bottom corners separately

s

Horizontal size adjustment

s

Tracking of EW waveform with Vertical size and

position and adaptation to frequency

s

Compensation of horizontal breathing through

EW waveform

Dynamic correction section

s

Generates waveforms for dynamic corrections

like focus, brightness uniformity, ...

s

1 output with vertical dynamic correction

waveform

s

1 output with composite HV dynamic correction

waveform

s

Fixed on screen by means of tracking system

DC/DC controller section

s

Step-up and step-down conversion modes

s

Internal and external sawtooth configurations

s

Bus-controlled output voltage

s

Synchronization on hor. frequency with phase

selection

s

Selectable polarity of drive signal

DESCRIPTION

The TDA9112 is a monolithic integrated circuit as-

sembled in a 32-pin shrink dual-in-line plastic

package. This IC controls all the functions related

to horizontal and vertical deflection in multimode

or multi-frequency computer display monitors.

The internal sync processor, combined with the

powerful geometry correction block, makes the

TDA9112 suitable for very high performance mon-

itors, using few external components.

Combined with other ST components dedicated

for CRT monitors (microcontroller, video preampli-

fier, video amplifier, OSD controller) the TDA9112

allows fully I

2

C bus-controlled computer display

monitors to be built with a reduced number of ex-

ternal components.

SHRINK 32

(Plastic Package)

ORDER CODE:

TDA9112

Version 4.2

November 2001

1/51

1

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