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GS4882

Gennum
Part Number GS4882
Manufacturer Gennum
Description Video Sync Separators
Published Sep 28, 2016
Detailed Description GS4882, GS4982 Video Sync Separators with 50% Sync Slicing Features • precision 50% sync slicing • internal color burst...
Datasheet PDF File GS4882 PDF File

GS4882
GS4882

Overview
GS4882, GS4982 Video Sync Separators with 50% Sync Slicing Features • precision 50% sync slicing • internal color burst filter • ±5ns temperature stability • superior noise immunity • robust signal detection/output muting circuitry • high performance dual mode input clamp • 0.
5V to 4.
0Vpp input signal with +5V supply • composite, vertical, back porch, odd/even outputs • horizontal sync output available with GS4982 • +4.
5V to +13.
2V supply voltage range • Pb-free and Green Description The GS4882 and GS4982 are precision sync separators for extracting timing information from NTSC, PAL, and SECAM video signals.
The GS4882 generates noise immune and temperature stable composite sync, vertical sync, back porch and odd/even field signals.
The GS4982 provides a horizontal sync output for those applications requiring horizontal sync extraction.
The GS4882 and GS4982 feature an internal color burst filter for minimization of spurious timing information and the reduction of external component count.
The precision 50% sync slicing feature embodied in the device provides for superior sync extraction in the presence of noise and varying sync pulse amplitudes.
The high performance dual mode input clamp aids in maintaining the accuracy of the internally derived 50% sync slicing level to within ±5% as well in reducing system start-up/recovery time.
In addition, a missing pulse detector enables the devices to quickly respond to impulse noise by temporarily turning on a Nosync Recovery Current connected to the dual mode input clamp.
The input stage will operate with input signal amplitudes ranging from +0.
5 to +4.
0V peak to peak with a +5V supply voltage.
The GS4882 and GS4982 have robust signal detection and output muting circuitry.
Should valid video be removed from the device input, the absence of video will be automatically detected and all outputs muted to a logic high state after a defined probation period.
Upon the return of a valid video signal, device outputs are enabled a...


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