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TDA9109/SN

LOW-COST DEFLECTION PROCESSOR FOR MULTISYNC MONITORS

STMicroelectronics 

TDA9109/SN

LOW-COST DEFLECTION PROCESSOR

FOR MULTISYNC MONITORS

.....HORIZONTAL

SELF-ADAPTATIVE

DUAL PLL CONCEPT

150kHz MAXIMUM FREQUENCY

X-RAY PROTECTION INPUT

I2C CONTROLS : H-POSITION, FREQUENCY

GENERATOR FOR BURN-IN MODE

VERTICAL

. VERTICAL RAMP GENERATOR

. 50 TO 185Hz AGC LOOP

. GEOMETRY TRACKING WITH VPOS & VAMP

. I2C CONTROLS :

VAMP, VPOS, S-CORR, C-CORR

. DC BREATHING COMPENSATION

I2C GEOMETRY CORRECTIONS

. VERTICAL PARABOLA GENERATOR

(Pin Cushion - E/W, Keystone, Corner)

. HORIZONTAL DYNAMIC PHASE

(Side Pin Balance & Parallelogram)

. VERTICAL DYNAMIC FOCUS

(Vertical Focus Amplitude)

.......GENERAL

SYNC PROCESSOR

12V SUPPLY VOLTAGE

8V REFERENCE VOLTAGE

HOR. & VERT. LOCK/UNLOCK OUTPUTS

READ/WRITE I2C INTERFACE

HORIZONTAL AND VERTICAL MOIRE

B+ REGULATOR

- INTERNAL PWM GENERATOR FOR B+

CURRENT MODE STEP-UP CONVERTER

- SOFT START

- I2C ADJUSTABLEB+ REFERENCE VOLTAGE

- OUTPUT PULSES SYNCHRONIZED ON

. HORIZONTAL FREQUENCY

- INTERNALMAXIMUMCURRENT LIMITATION

COMPARED WITH THE TDA9109,

THE TDA9109/SN HAS :

- CORNER CORRECTION,

- HORIZONTAL MOIRÉ,

PRELIMINARY DATA

SHRINK32

(Plastic Package)

ORDER CODE : TDA9109/SN

- B+ SOFT START,

- INCREASED MAX.VERTICAL FREQUENCY,

- NO HORIZONTAL FOCUS,

- NO STEP DOWN OPTION FOR DC/DC CON-

VERTER,

- NO I2C FREE RUNNING ADJUSTMENT,

- FIXED HORIZONTAL DUTY CYCLE (48%),

- INCREASED MAXIMUM STORAGE TIME

OF THE HORIZONTAL SCANNING TRAN-

SISTOR.

DESCRIPTION

The TDA9109/SN is a monolithic integrated circuit

assembledin 32-pin shrink dual in line plastic pack-

age. This IC controls all the functions related to the

horizontal and vertical deflection in multimode or

multi-frequency computer display monitors.

The internal sync processor, combinedwith the very

powerful geometry correction block make the

TDA9109/SN suitable for very high performance

monitors, using very few external components.

The horizontaljitter level is very low. It is particularly

well suited for high-end 15” and 17” monitors.

Combined with the ST7275 Microcontroller fam-

ily, TDA9206 (Video preamplifier) and STV942x

(On-Screen Display controller) the TDA9109/SN

allows fully I2C bus controlled computer display

monitors to be built with a reduced number of

external components.

June 1998

This is advance information on a new product now in development or undergoing evaluatio n. Details are subject to change without notice.

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