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.