DESCRIPTION
●The STV6888 is a monolithic integrated circuit as sembled 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.
●The internal sync processor, combined with the powerful geometry correction block, makes the STV6888 suitable for very high performance monitors, using few external components.
●FEATURES
●General
●■ ADVANCED I2C BUS CONTROLLED DEFLECTION PROCESSOR DEDICATED FOR HIGH-END CRT MONITORS
●■ SINGLE SUPPLY VOLTAGE 12V
●■ VERY LOW JITTER
●■ DC/DC CONVERTER CONTROLLER
●■ ADVANCED EW DRIVE
●■ ADVANCED ASYMMETRY CORRECTIONS
●■ AUTOMATIC MULTISTANDARD SYNCHRONIZATION
●■ VERTICAL DYNAMIC CORRECTION WAVEFORM OUTPUT
●■ X-RAY PROTECTION AND SOFT-START & STOP ON HORIZONTAL AND DC/DC DRIVE OUTPUTS
●■ I2C BUS STATUS REGISTER
●Horizontal section
●■ 100 kHz maximum frequency
●■ Corrections of geometric asymmetry: Pin cushion asymmetry, Parallelogram
●■ Tracking of asymmetry corrections with vertical size and position
●■ Fully integrated internal horizontal moiré cancellation and 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, Top/Bottom corners separately
●■ 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
●■ Output with vertical dynamic correction waveform 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
●■ Bus-controlled output voltage
●■ Synchronization on hor. frequency with phase selection
●■ Selectable polarity of drive signal
