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The THS8083A95 is a complete solution for digitizing video and graphic signals in RGB or YUV/YCbCr color spaces. The device supports pixel rates up to 95 MHz. Therefore, it can be used for PC graphics digitizing up to the VESA standard of XGA (1024 X768) resolution at 75Hz screen refresh rate, and in video environments for the digitizing of digital TV formats, including HDTV.
The THS8083A95 is powered from a single 3.3-V supply and integrates a triple high-performance A/D converter with clamping functions and variable gain, independently programmable for each channel. The clamp timing window isprovided by an external pulse or can be generated internally. The programmable gain amplifiers consist of coarse and fine gain control blocks. The THS8083A95 includes slicing circuitry on the Y or G input to support sync-on-green or sync-on-luminance extraction.
THS8083A95 Features
Analog Channels - Three digitizing channels, each with independently controllable clamp, PGA, and ADC -Clamp: 256-step programmable RGB or YUV clamping during external or internal clamp timing window -PGA: 6-bit coarse/5-bit fine programmable gain amplifier -ADC: 8 bit 95 MSPS A/D converter -Composite sync: Integrated sync-on-green/ sync-on-luminance extraction from green/luminance channel or from dedicated input -Support for dc and ac-coupled input signals