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.
|