TDA4689 Overview
The TDA4689 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 ORDERING INFORMATION TYPE NUMBER TDA4689 1997 Jul 01 PACKAGE NAME DIP28 DESCRIPTION plastic dual...
TDA4689 Key Features
- Operates from an 8 V DC supply
- Black level clamping of the colour difference, luminance and RGB input signals with coupling-capacitor for DC level stor
- Two analog RGB inputs, selected either by fast switch signals or via I2C-bus; brightness and contrast control of both RG
- Saturation, contrast, brightness and white 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, vertical synchronization and cut-off t
- Automatic cut-off control or clamped output selectable via I2C-bus
- Automatic cut-off control with picture tube leakage current pensation
- Cut-off measurement pulses after end of the vertical blanking pulse or end of an extra vertical flyback pulse
- Ultra-black or nominal black blanking selectable via I2C-bus in clamped output mode