ZXFV4583
SYNC SEPARATOR WITH VARIABLE FILTER
DEVICE DESCRIPTION
FEATURES AND BENEFITS
The ZXFV4583 provides the ability to separate out
video synchronization signals for a wide variety of TV
and CRT display system s, standard and non-standard.
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PAL, NTSC, SECAM
Variable filter for optim al accuracy
Sync outputs: com posite, horizontal, vertical, back
porch, odd/even
Flexibility arises from the use of just three external
resistors to adapt to each application. One resistor
controls a fully integrated internal color carrier filter
with variable bandwidth. This filter avoids disturbance
from the color carrier, perm itting accurate threshold
slicing for tim ing extraction.
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No-signal detector
On chip sam ple / hold capacitors
+5V single supply
Default vertical output where there are no
serration pulses
A second resistor controls the voltage threshold for
loss of signal detection after a tim e-out interval. The
third resistor controls the tim ing functions.
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Pin and layout com patible with part EL4583 in
SO16N surface m ount package
APPLICATIONS
DC restoration for displays is facilitated by the Back
Porch synch output, which can be used to drive an
external circuit to clam p the blanking voltage to a fixed
level.
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Digital im age capture
Video input system s requiring separation of
picture tim ing
ORDERING INFORMATION
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Video distribution
Part Number
Container
Increment
500
CCTV surveillance
ZXFV4583N16TA
ZXFV4583N16TC
Re e l 7″
Digital m ultim edia
Re e l 13″
2500
Tim ing for black level clam p
CONNECTION DIAGRAM
ISSUE 3 - NOVEMBER 2003
1
S E M IC O N D U C T O R S