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TDA9109A

LOW-COST I2C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITOR

STMicroelectronics 

TDA9109A

LOW-COST I2C CONTROLLED DEFLECTION PROCESSOR

FOR MULTISYNC MONITOR

FEATURES

General

s SYNC PROCESSOR

s 12V SUPPLY VOLTAGE

s 8V REFERENCE VOLTAGE

s HORIZONTAL LOCK/UNLOCK OUTPUT

s READ/WRITE I2C INTERFACE

s VERTICAL MOIRE

s B+ REGULATOR

- Internal PWM generator for B+ current mode

step-up converter

- Switchable to step-down converter

- I2C adjustable B+ reference voltage

- Output Pulses Synchronized on Horizontal

Frequency

- Internal Maximum Current Limitation

Horizontal

s Self-adaptative

s Dual PLL concept

s 150kHz maximum frequency

s X-ray protection input

s I2C controls:

Horizontal duty-cycle, H-position

Vertical

s Vertical ramp generator

s 50 to 185Hz AGC loop

s Geometry tracking with Vpos & Vamp

s I2C controls:

Vamp, Vpos, S-corr, C-corr

s DC breathing compensation

I2C Geometry corrections

s Vertical parabola generator

(Pin Cushion - E/W, Keystone, Corner

Correction)

s Horizontal dynamic phase

(Side Pin Balance & Parallelogram)

s Horizontal and vertical dynamic focus

(Horizontal focus amplitude, Horizontal focus

symmetry, Vertical focus amplitude)

June 2000

DESCRIPTION

The TDA9109A is a monolithic integrated circuit

assembled in a 32-pin shrink dual in line plastic

package. This IC controls all the functions related

to the horizontal and vertical deflection in multi-

mode or multi-frequency computer display moni-

tors.

The internal sync processor, combined with the

very powerful geometry correction block, make

the TDA9109A suitable for very high performance

monitors, using very few external components.

The horizontal jitter level is very low. It is particu-

larly well-suited to high-end 15” and 17” monitors.

Combined with the ST7275 Microcontroller family,

TDA9206 (Video preamplifier) and STV942x (On-

Screen Display controller), the TDA9109A allows

fully I2C bus-controlled computer display monitors

to be built with a reduced number of external com-

ponents

.

SHRINK32 (Plastic Package)

ORDER CODE: TDA9109A

Version 4.2

1/47

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