TDA4780

INTEGRATED CIRCUITS DATA SHEET TDA4780 RGB video processor with automatic cut-off control and gamma adjust Preliminary specification Supersedes data of May 1994 File under Integrated Circuits, IC02 1997 Feb 06 Philips Semiconductors Preliminary specification RGB video processor with automatic cut-off control and gamma adjust FEATURES Gamma adjust Dynamic black control (adaptive black) All input signals clamped on black-levels Automatic cut-off control, alternative: output clamping on fixed levels Three adjustable reference voltage levels via I2C-bus for automatic cut-off control Luminance/colour difference interface Two luminance input levels allowed Two RGB interfaces controlled by either fast switches or by I2C-bus Two peak drive limiters, selection via Blue stretch, selection via I2C-bus Luminance output for scan velocity modulation (SCAVEM) Extra luminance output; same pin can be used as hue control output e.g. for the TDA4650 and TDA4655 Non standard operations like 50 Hz/32 kHz are also possible Either 2 or 3 level sandcastle pulse applicable High bandwidth for 32 kHz application White point adjusts via I2C-bus Average beam current and improved peak drive limiting Two switch-on delays to prevent discoloration during start-up All functions and features programmable via I2C-bus PAL/SECAM or NTSC matrix selection. GENERAL DESCRIPTION The TDA4780 is a monolithic integrated circuit with a luminance and a colour difference interface ...