STV6888

低成本I2C可控弯曲处理器的MultiSync显示器 LOW-COST I2C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITOR

DESCRIPTION

The 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