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