DESCRIPTION

The STV9118 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 STV9118 suitable for very high performance monitors, using few external components.

Combined with other ST components dedicated for CRT monitors (microcontroller, video preamplifier, video amplifier, OSD controller) the STV9118 allows fully I2C bus-controlled computer display monitors to be built with a reduced number of 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

■ N-MOS transistor drive

■ External sawtooth configuration

■ Bus-controlled output voltage

■ Synchronization on hor. frequency with phase selection