NXP Semiconductors TDA4688
The TDA4688 includes full I2C-bus control of all parameters and functions with automatic cut-off control of the picture tube cathode currents. It provides RGB output signals for the video output stages. The TDA4688 is a simplified, pin compatible (except for pin 18) version of the TDA4681.| Part No. | TDA4688 |
|---|---|
| Datasheet | TDA4688 Download |
| Manufacturer |  NXP Semiconductors |
| Description | Video processor |
| Buy | Stock & Price |
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 RGB inputs
● 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 timing pulses
● Automatic cut-off control or clamped output selectable via I2C-bus
● Automatic cut-off control with picture tube leakage current compensation
● 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
● Two switch-on delays to prevent discolouration before steady-state operation
● Average beam curr...
