DESCRIPTION
The TDA9109/S is a monolithic integrated circuit assembled in 32-pin shrink dual in line plastic package. 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, combined with the very powerful geometry correction block make the TDA9109/S suitable for very high performance monitors, using very few external components.
The horizontal jitter level is very low. 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/S 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 :
   HORIZONTAL DUTY-CYCLE, H-POSITION,
   FREE RUNNING FREQUENCY, 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 ADJUSTABLE B+ REFERENCE VOLTAGE
   - OUTPUT PULSES SYNCHRONIZED ON HORIZONTAL FREQUENCY
   - INTERNAL MAXIMUM CURRENT LIMITATION

■ COMPARED WITH THE TDA9109,
THE TDA9109/S HAS :
   - CORNER CORRECTION,
   - HORIZONTAL MOIRÉ,
   - B+ SOFT START,
   - INCREASED MAX. VERTICAL FREQUENCY,
   - NO HORIZONTAL FOCUS,
   - NO STEP DOWN OPTION FOR DC/DC CON VERTER.