DESCRIPTION

The TDA9109/N is a monolithic integrated circuit assembled in 32-pin shrink dual in line plastic package. This IC controlsall the functionsrelated to the horizontal and vertical deflection in multimode or multi-frequency computer display monitors.

The internal sync processor, combined with the very powerful geometry correction block make the TDA9109/N 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/N 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

I2C GEOMETRY CORRECTIONS

■ VERTICAL PARABOLA GENERATOR

(Pincushion, Keystone)

■ HORIZONTAL DYNAMIC PHASE

(Side Pin Balance & Parallelogram)

■ HORIZONTAL AND VERTICAL DYNAMIC FOCUS (Horizontal Focus Amplitude, Horizontal Focus Symmetry, Vertical Focus Amplitude)

GENERAL

■ SYNC PROCESSOR

■ 12V SUPPLY VOLTAGE

■ 8V REFERENCE VOLTAGE

■ HOR. & VERT. LOCK/UNLOCK OUTPUTS

■ READ/WRITE I2C INTERFACE

■ VERTICAL MOIRE

■ B+ REGULATOR

- INTERNAL PWM GENERATOR FOR B+ CURRENT MODE STEP-UP CONVERTER

- SWITCHABLE TO STEP-DOWN CONVERTER

- I2C ADJUSTABLEB+ REFERENCE VOLTAGE

- OUTPUT PULSES SYNCHRONIZED ON HORIZONTAL FREQUENCY

- INTERNAL MAX. CURRENT LIMITATION

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

- NO I2C FREE RUNNING FREQUENCY ADJUSTMENT

- FIXED HORIZONTAL DUTY CYCLE (48)

- INCREASED MAX. STORAGE TIME OF THE HORIZONTAL SCANNING TRANSISTOR