TDA4780 Datasheet | NXP Semiconductors

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 k Hz are also possible - Either 2 or 3 level sandcastle pulse applicable - High bandwidth for 32 k Hz 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 for video processing in TV receivers. Its primary function is to process the luminance and colour difference signals from a colour decoder which is equipped e.g. with the multistandard decoder TDA4655 or TDA9160 plus delay line TDA4661 or TDA4665 and the Picture Signal Improvement (PSI) IC TDA467X or from a feature module. I2C-bus The required input signals are: - Luminance and negative colour difference signals - 2 or 3-level sandcastle pulse for internal timing pulse generation - I2C-bus data and clock signals. Two sets of analog RGB colour signals can also be inserted, e.g. one from a peritelevision connector (SCART plug) and the other one from an On-Screen Display (OSD) generator. The TDA4780 has I2C-bus control of all parameters and functions with automatic cut-off control of the picture tube cathode...