TDA4680

INTEGRATED CIRCUITS DATA SHEET TDA4680 Video processor with automatic cut-off and white level control Product specification Supersedes data of April 1993 File under Integrated Circuits, IC02 1996 Oct 25 Philips Semiconductors Product specification Video processor with automatic cut-off and white level control FEATURES Operates from an 8 V DC supply Black level clamping of the colour difference, luminance and RGB input signals with coupling-capacitor DC level storage Two fully-controlled, analog RGB inputs, selected either by fast switch signals or via I2C-bus Saturation, contrast and brightness adjustment via I2C-bus Same RGB output black levels for Y/CD and RGB input signals Timing pulse generation from either a 2 or 3-level sandcastle pulse for clamping, horizontal and vertical synchronization, cut-off and white level timing pulses Automatic cut-off control with picture tube leakage current compensation Software-based automatic white level control or fixed white levels via I2C-bus Cut-off and white level measurement pulses in the last 4 lines of the vertical blanking interval (I2C-bus selection for PAL, SECAM, or NTSC, PAL-M) Increased RGB signal bandwidths for progressive scan and 100 Hz operation (selected via I2C-bus) Two switch-on delays to prevent discolouration before steady-state operation Average beam current and peak drive limiting PAL/SECAM or NTSC matrix selection via I2C-bus Three adjustable reference voltage levels (via I2C-bus) f...