Rastergraf Topaz, User Manual

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Rastergraf
Programming On-board Devices and Memories 5-25
5.10 AD9882 High Speed Digitizer (Stratus/Garnet)
Analog Interface
The AD9882 is a complete 8-bit 140 MSPS monolithic analog interface
optimized for capturing RGB graphics signals from personal computers
and workstations. Its 140 MSPS encode rate capability and full power
analog bandwidth of 300 MHz supports resolutions up to SXGA (1280 x
1024 at 75 Hz). The analog interface includes a 140 MHz triple ADC with
internal 1.25 V reference, a Phase Locked Loop (PLL), and programmable
gain, offset, and clamp control. The AD9882’s on-chip PLL generates a
pixel clock from Hsync. Pixel clock output frequencies range from 12
MHz to 140 MHz. PLL clock jitter is typically 500 ps p-p at 140 MSPS.
The AD9882 also offers full sync processing for composite sync and
Sync-on-Green (SOG) applications.
Digital Interface
The AD9882 contains a DVI 1.0 compatible receiver and supports display
resolutions up to SXGA (1280 ¥ 1024 at 60 Hz). The receiver features an
intra-pair skew tolerance of up to one full clock cycle.
For more information, see the AD9882 Data Sheet:
http://www.analog.com/UploadedFiles/Datasheets/415000914AD9882_a.pdf