DESCRIPTION The TDA9115 is a monolithic integrated circuit assembled in a 32-pin shrink dual-in-line plastic package. This IC controls all the functions related to horizontal and vertical deflection in multimode or multi-frequency computer display monitors. FEATURES General ■ I2C-BUS-CONTROLLED DEFLECTION PROCESSOR DEDICATED FOR LOW-END CRT MONITORS ■ SINGLE SUPPLY VOLTAGE 12V ■ VERY LOW JITTER ■ DC/DC CONVERTER CONTROLLER ■ ADVANCED EW DRIVE ■ AUTOMATIC MULTISTANDARD SYNCHRONIZATION ■ DYNAMIC CORRECTION WAVEFORM OUTPUT ■ X-RAY PROTECTION AND SOFT-START & STOP ON HORIZONTAL AND DC/DC DRIVE OUTPUTS Horizontal section ■ 150 kHz maximum frequency ■ Corrections of geometric asymmetry: Pin cushion asymmetry, Parallelogram ■ Tracking of asymmetry corrections with vertical size and position ■ Horizontal moiré cancellation output Vertical section ■ 200 Hz maximum frequency ■ Vertical ramp for DC-coupled output stage with adjustments of: C-correction, S-correction for super-flat CRT, Vertical size, Vertical position ■ Vertical moiré cancellation through vertical ramp waveform ■ Compensation of vertical breathing with EHT variation EW section ■ Symmetrical geometry corrections: Pin cushion, Keystone ■ Horizontal size adjustment ■ Tracking of EW waveform with Vertical size and position and adaptation to frequency ■ Compensation of horizontal breathing through EW waveform Dynamic correction section ■ Vertical dynamic correction waveform output for dynamic corrections like focus, brightness uniformity, ... ■ Fixed on screen by means of tracking system
DC/DC controller section ■ Step-up and step-down conversion modes ■ External sawtooth configuration ■ Synchronization on hor. frequency with phase selection ■ Selectable polarity of drive signal
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