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The EL4501 is a highly-integrated Video Front End (VFE)incorporaTIng all of the key signal condiTIoning funcTIons foranalog video signals. It provides a flexible front-end interfacefor analog or analog/digital video sub-systems. The VFEcontains a high bandwidth DC-restore, an advanced syncseparator and a data slicer with an adjustable threshold,configurable output and power-down mode.The VFE performs restoraTIon of the DC level (blankinglevel) of a video signal and the recovery of all signal timingnecessary for synchronization and control. Additionally, dataembedded in the active video or VBI regions of the videosignal may be extracted using the flexible data slicerincorporated into the VFE. The advanced sync separatorexhibits excellent noise immunity by incorporating a digitalbrick wall filter and signal qualification algorithm. TheDC-restored video amplifier is unity gain stable with anunloaded -3dB bandwidth of 100MHz. The input commonmode voltage range extends from the negative rail to within1.5V of the positive rail. When driving a 75Ω doubleterminated coaxial cable, the amplifier can drive to within150mV of either rail. With 200V/μs slew rate, the amplifier iswell suited for composite and component video applications.The VFE operates from a single 5V supply from -40°C to+85°C and is available in a reduced footprint 24 Ld QSOPpackage.
