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EL4583A

Renesas
Part Number EL4583A
Manufacturer Renesas
Description Sync Separator
Published May 30, 2020
Detailed Description EL4583A Sync Separator, 50% Slice, S-H, Filter, HOUT The EL4583A extracts timing from video sync in NTSC, PAL, and SECA...
Datasheet PDF File EL4583A PDF File

EL4583A
EL4583A

Overview
EL4583A Sync Separator, 50% Slice, S-H, Filter, HOUT The EL4583A extracts timing from video sync in NTSC, PAL, and SECAM systems, and non-standard formats, or from computer graphics operating at higher scan rates.
Timing adjustment is via an external resistor.
Input without valid vertical interval (no serration pulses) produces a default vertical output.
Outputs are: composite sync, vertical sync, filter, burst/back porch, horizontal, no signal detect, level, and odd/even output (in interlaced scan formats only).
The EL4583A sync slice level is set to the mid-point between sync tip and the blanking level.
This 50% point is determined by two internal sample and hold circuits that track sync tip and back porch levels.
It provides hum and noise rejection and compensates for input levels of 0.
5V to 2.
0VP-P.
A built in filter attenuates the chroma signal to prevent color burst from disturbing the 50% sync slice.
Cut off frequency is set by a resistor to ground from the Filter Cut Off pin.
...


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