DESCRIPTION
The TDA9112A 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.
Combined with other ST components dedicated for CRT monitors (microcontroller, video preamplifier, video amplifier, OSD controller), the TDA9112A 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
• 2 dynamic correction waveform outputs
• X-ray protection and Soft-start & stop on horizontal and DC/DC drive outputs
• I2C-bus status register

Horizontal section
• 150 kHz maximum frequency
• Corrections of geometric asymmetry: Pin cushion asymmetry, Parallelogram, separate Top/Bottom corner asymmetry
• Tracking of asymmetry corrections with vertical size and position
• Fully integrated horizontal moiré cancellation Vertical secti

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 size and position prescales for factory adjustment
• Vertical moiré cancellation through vertical ramp waveform
• Compensation of vertical breathing with EHT variation; I2C-bus gain adjustment