TDA4688 Overview
INTEGRATED CIRCUITS DATA SHEET TDA4688 Video processor with automatic cut-off control Product specification Supersedes data of July 1993 File under Integrated Circuits, IC02 1997 Jun 23 Philips Semiconductors Product specification Video processor with automatic cut-off control.
TDA4688 Key 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 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