TDA9109A

TDA9109A LOW-COST I2C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITOR FEATURES General s SYNC PROCESSOR s 12V SUPPLY VOLTAGE s 8V REFERENCE VOLTAGE s HORIZONTAL LOCK/UNLOCK OUTPUT 2 s READ/WRITE I C INTERFACE s VERTICAL MOIRE s B+ REGULATOR - Internal PWM generator for B+ current mode step-up converter - Switchable to step-down converter - I2C adjustable B+ reference voltage - Output Pulses Synchronized on Horizontal Frequency - Internal Maximum Current Limitation Horizontal s Self-adaptative s Dual PLL concept s 150kHz maximum frequency s X-ray protection input 2 s I C controls: Horizontal duty-cycle, H-position Vertical s Vertical ramp generator s 50 to 185Hz AGC loop s Geometry tracking with Vpos & Vamp 2 s I C controls: Vamp, Vpos, S-corr, C-corr s DC breathing compensation I2C Geometry corrections s Vertical parabola generator (Pin Cushion - E/W, Keystone, Corner Correction) s Horizontal dynamic phase (Side Pin Balance & Parallelogram) s Horizontal and vertical dynamic focus (Horizontal focus amplitude, Horizontal focus symmetry, Vertical focus amplitude) Version 4.2 June 2000 1/47 DESCRIPTION The TDA9109A is a monolithic integrated circuit assembled in a 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 TDA9109A suitable for very hi...