NXP Semiconductors TDA4681
The TDA4681 is a monolithic integrated circuit with a colour difference interface for video processing in TV receivers. Its primary function is to process the luminance and colour difference signals from multistandard colour decoders, TDA4555, TDA4650/T, TDA4655/T or TDA4657, Colour Transient Improvement (CTI) IC, TDA4565, Picture Signal Improvement (PSI) IC, TDA4670 or from a feature module. 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 for microcontroller control.