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DESCRIPTION

The TDA9109/SN is a monolithic integrated circuit assembledin 32-pinshrink dual in line plastic package. This IC controls all the functionsrelated to the horizontal and vertical deflection in multimode or multi-frequency computer display monitors.

Theinternalsyncprocessor,combinedwith the very powerful geometry correction block make the TDA9109/SN suitable for very high performance monitors, using very few external components.

The horizontaljitter levelisverylow. It is particularly well suited for high-end 15” and 17” monitors.

Combined with the ST7275 Microcontroller family, 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.

HORIZONTAL

■ SELF-ADAPTATIVE

■ DUAL PLL CONCEPT

■ 150kHz MAXIMUM FREQUENCY

■ X-RAY PROTECTION INPUT

■ I2C CONTROLS : H-POSITION, FREQUENCY GENERATORFORBURN-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

- INTERNALMAXIMUMCURRENTLIMITATION

■ COMPARED WITH THE TDA9109, THE TDA9109/SN HAS :

- CORNER CORRECTION,

- HORIZONTAL MOIR?,

- B+ SOFT START,

- INCREASED MAX.VERTICALFREQUENCY,

- NO HORIZONTAL FOCUS,

- NO STEPDOWNOPTIONFOR DC/DC CONVERTER,

- NO I2C FREE RUNNING ADJUSTMENT,

- FIXED HORIZONTAL DUTY CYCLE (48),

- INCREASED MAXIMUM STORAGE TIME OF THE HORIZONTAL SCANNING TRANSISTOR.