GENERAL DESCRIPTION
The TDA4887PS is a monolithic integrated RGB preamplifier for colour monitor systems (e.g. 15" and 17") with I2C-bus control and OSD. In addition to bus control, beam current limiting and contrast modulation are possible. The IC offers brightness control with or without grey scale tracking for easy alignment. The signals are amplified to drive commonly used video modules or discrete solutions. A choice can be made between individual black level control with negative feedback from the cathode (DC coupling), or black level control with positive feedback and three DAC outputs for external cut-off control (AC coupling).

FEATURES
• 160 MHz pixel rate
• 2.7 ns rise time, 3.6 ns fall time
• I2C-bus control
• I2C-bus data buffer for synchronization of adjustments
• 8-bit Digital-to-Analog Converters (DACs)
• 200 ns input clamping pulse
• 4.6 V (p-p) output signal
• Brightness control with grey scale tracking for user-friendly performance (4 dB more than TDA4885 and TDA4886)
• Brightness control without grey scale tracking for easy alignment
• On Screen Display (OSD) mixing with 50 MHz pixel rate
• OSD contrast
• Negative feedback for DC-coupled cathodes
• Especially for AC-coupled cathodes
– Bus controlled black level adaptable to post amplifier type
– Internal positive feedback
– DAC outputs for black level restoration
• Integrated black level storage capacitors
• Beam current limiting
• Subcontrast/contrast modulation
• Adjustable pedestal blanking
• Sync clipping.