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TDA4857PS
General description
The TDA4857PS is a high performance and efficient solution for autosync monitors. All functions are controllable by the I²C-bus.
The TDA4857PS provides synchronization processing, horizontal and vertical synchronization with full autosync capability and very short settling times after mode changes. External power components are given a great deal of protection. The IC generates the drive waveforms for DC-coupled vertical boosters such as the TDA486x and TDA835x.
The TDA4857PS provides extended functions e.g. as a flexible B+ control, an extensive set of geometry control facilities and an output for vertical focus signals.
Together with the I²C-bus driven Philips TDA488x video processor family, a very advanced system solution is offered.
Features
- Full horizontal plus vertical autosync capability
- Extended horizontal frequency range from 15 to 130 kHz
- Comprehensive set of I²C-bus driven geometry adjustments and functions, including standby mode
- Very good vertical linearity
- Moire cancellation
- Start-up and switch-off sequence for safe operation of all power components
- X-ray protection
- Flexible switched mode B+ supply function block for feedback and feed forward converter
- Internally stabilized voltage reference
- Drive signal for focus amplifier with vertical parabola waveforms
- DC controllable inputs for Extremely High Tension (EHT) compensation
- SDIP32 package.
Design support
Application Notes
AN00057_1;
ECO-monitor (08-Nov-00)
AN01056_1;
Application information for TDA8357J N2 and TDA8359J N2 deflection output circuits (01-Jan-02)
AN10114_1;
Application information for TDA8358J N2 deflection output circuit with East-West amplifier (01-Jun-02)
Support Documents
75008721;
CRT Designer's Guide (2001-10-09)
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